diff --git a/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.html b/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.html
index aca7a2e..25732cc 100644
--- a/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.html
+++ b/polygerrit-ui/app/elements/change/gr-file-list/gr-file-list.html
@@ -338,6 +338,7 @@
               patch-range="[[patchRange]]"
               path="[[file.__path]]"
               prefs="[[diffPrefs]]"
+              project-name="[[change.project]]"
               project-config="[[projectConfig]]"
               on-line-selected="_onLineSelected"
               no-render-on-prefs-change
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-image.js b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-image.js
index 683f2fc..ddf3896 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-image.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-image.js
@@ -19,9 +19,10 @@
 
   const IMAGE_MIME_PATTERN = /^image\/(bmp|gif|jpeg|jpg|png|tiff|webp)$/;
 
-  function GrDiffBuilderImage(diff, comments, prefs, outputEl, baseImage,
-      revisionImage) {
-    GrDiffBuilderSideBySide.call(this, diff, comments, prefs, outputEl, []);
+  function GrDiffBuilderImage(
+      diff, comments, prefs, projectName, outputEl, baseImage, revisionImage) {
+    GrDiffBuilderSideBySide.call(
+        this, diff, comments, prefs, projectName, outputEl, []);
     this._baseImage = baseImage;
     this._revisionImage = revisionImage;
   }
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-side-by-side.js b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-side-by-side.js
index 7606b6c..4cf1179 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-side-by-side.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-side-by-side.js
@@ -17,8 +17,10 @@
   // Prevent redefinition.
   if (window.GrDiffBuilderSideBySide) { return; }
 
-  function GrDiffBuilderSideBySide(diff, comments, prefs, outputEl, layers) {
-    GrDiffBuilder.call(this, diff, comments, prefs, outputEl, layers);
+  function GrDiffBuilderSideBySide(
+      diff, comments, prefs, projectName, outputEl, layers) {
+    GrDiffBuilder.call(
+        this, diff, comments, prefs, projectName, outputEl, layers);
   }
   GrDiffBuilderSideBySide.prototype = Object.create(GrDiffBuilder.prototype);
   GrDiffBuilderSideBySide.prototype.constructor = GrDiffBuilderSideBySide;
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-unified.js b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-unified.js
index e6943dd..2ddb987 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-unified.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-unified.js
@@ -17,8 +17,10 @@
   // Prevent redefinition.
   if (window.GrDiffBuilderUnified) { return; }
 
-  function GrDiffBuilderUnified(diff, comments, prefs, outputEl, layers) {
-    GrDiffBuilder.call(this, diff, comments, prefs, outputEl, layers);
+  function GrDiffBuilderUnified(
+      diff, comments, prefs, projectName, outputEl, layers) {
+    GrDiffBuilder.call(
+        this, diff, comments, prefs, projectName, outputEl, layers);
   }
   GrDiffBuilderUnified.prototype = Object.create(GrDiffBuilder.prototype);
   GrDiffBuilderUnified.prototype.constructor = GrDiffBuilderUnified;
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
index b98959b..22e5080 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.html
@@ -94,6 +94,7 @@
           isImageDiff: Boolean,
           baseImage: Object,
           revisionImage: Object,
+          projectName: String,
           _builder: Object,
           _groups: Array,
           _layers: Array,
@@ -219,9 +220,9 @@
         },
 
         createCommentThreadGroup(changeNum, patchNum, path,
-            isOnParent, commentSide, projectConfig) {
+            isOnParent, commentSide) {
           return this._builder.createCommentThreadGroup(changeNum, patchNum,
-              path, isOnParent, commentSide, projectConfig);
+              path, isOnParent, commentSide);
         },
 
         emitGroup(group, sectionEl) {
@@ -252,13 +253,14 @@
         _getDiffBuilder(diff, comments, prefs) {
           if (this.isImageDiff) {
             return new GrDiffBuilderImage(diff, comments, prefs,
-            this.diffElement, this.baseImage, this.revisionImage);
+                this.projectName, this.diffElement, this.baseImage,
+                this.revisionImage);
           } else if (this.viewMode === DiffViewMode.SIDE_BY_SIDE) {
-            return new GrDiffBuilderSideBySide(
-            diff, comments, prefs, this.diffElement, this._layers);
+            return new GrDiffBuilderSideBySide(diff, comments, prefs,
+                this.projectName, this.diffElement, this._layers);
           } else if (this.viewMode === DiffViewMode.UNIFIED) {
-            return new GrDiffBuilderUnified(
-            diff, comments, prefs, this.diffElement, this._layers);
+            return new GrDiffBuilderUnified(diff, comments, prefs,
+                this.projectName, this.diffElement, this._layers);
           }
           throw Error('Unsupported diff view mode: ' + this.viewMode);
         },
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.js b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.js
index d01f838..a9438bb7 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.js
@@ -30,10 +30,11 @@
 
   const REGEX_ASTRAL_SYMBOL = /[\uD800-\uDBFF][\uDC00-\uDFFF]/;
 
-  function GrDiffBuilder(diff, comments, prefs, outputEl, layers) {
+  function GrDiffBuilder(diff, comments, prefs, projectName, outputEl, layers) {
     this._diff = diff;
     this._comments = comments;
     this._prefs = prefs;
+    this._projectName = projectName;
     this._outputEl = outputEl;
     this.groups = [];
 
@@ -336,14 +337,14 @@
   };
 
   GrDiffBuilder.prototype.createCommentThreadGroup = function(changeNum,
-      patchNum, path, isOnParent, projectConfig, range) {
+      patchNum, path, isOnParent, range) {
     const threadGroupEl =
         document.createElement('gr-diff-comment-thread-group');
     threadGroupEl.changeNum = changeNum;
     threadGroupEl.patchForNewThreads = patchNum;
     threadGroupEl.path = path;
     threadGroupEl.isOnParent = isOnParent;
-    threadGroupEl.projectConfig = projectConfig;
+    threadGroupEl.projectName = this._projectName;
     threadGroupEl.range = range;
     return threadGroupEl;
   };
@@ -370,8 +371,7 @@
         this._comments.meta.changeNum,
         patchNum,
         this._comments.meta.path,
-        isOnParent,
-        this._comments.meta.projectConfig);
+        isOnParent);
     threadGroupEl.comments = comments;
     if (opt_side) {
       threadGroupEl.setAttribute('data-side', opt_side);
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
index ee66b42..72f557e 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder_test.html
@@ -62,13 +62,16 @@
     setup(() => {
       stub('gr-rest-api-interface', {
         getLoggedIn() { return Promise.resolve(false); },
+        getProjectConfig() { return Promise.resolve({}); },
       });
       const prefs = {
         line_length: 10,
         show_tabs: true,
         tab_size: 4,
       };
-      builder = new GrDiffBuilder({content: []}, {left: [], right: []}, prefs);
+      const projectName = 'my-project';
+      builder = new GrDiffBuilder(
+          {content: []}, {left: [], right: []}, prefs, projectName);
     });
 
     test('context control buttons', () => {
@@ -265,7 +268,7 @@
         assert.equal(threadGroupEl.patchForNewThreads, patchNum);
         assert.equal(threadGroupEl.path, '/path/to/foo');
         assert.equal(threadGroupEl.isOnParent, isOnParent);
-        assert.deepEqual(threadGroupEl.projectConfig, {foo: 'bar'});
+        assert.deepEqual(threadGroupEl.projectName, 'my-project');
         assert.deepEqual(threadGroupEl.comments, comments);
       }
 
@@ -761,7 +764,7 @@
         outputEl = element.queryEffectiveChildren('#diffTable');
         sandbox.stub(element, '_getDiffBuilder', () => {
           const builder = new GrDiffBuilder(
-              {content}, {left: [], right: []}, prefs, outputEl);
+              {content}, {left: [], right: []}, prefs, 'my-project', outputEl);
           sandbox.stub(builder, 'addColumns');
           builder.buildSectionElement = function(group) {
             const section = document.createElement('stub');
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group.html b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group.html
index 17de5d2..fdb7b6a 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group.html
@@ -38,7 +38,7 @@
           location-range="[[thread.locationRange]]"
           patch-num="[[thread.patchNum]]"
           path="[[path]]"
-          project-config="[[projectConfig]]"></gr-diff-comment-thread>
+          project-name="[[projectName]]"></gr-diff-comment-thread>
     </template>
   </template>
   <script src="gr-diff-comment-thread-group.js"></script>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group.js b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group.js
index 7899fc7..b6af0d8 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread-group/gr-diff-comment-thread-group.js
@@ -23,8 +23,8 @@
         type: Array,
         value() { return []; },
       },
+      projectName: String,
       patchForNewThreads: String,
-      projectConfig: Object,
       range: Object,
       isOnParent: {
         type: Boolean,
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread.html b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread.html
index f5614a9..d7c296b 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread.html
@@ -61,7 +61,7 @@
             show-actions="[[_showActions]]"
             comment-side="[[comment.__commentSide]]"
             side="[[comment.side]]"
-            project-config="[[projectConfig]]"
+            project-config="[[_projectConfig]]"
             on-create-fix-comment="_handleCommentFix"
             on-comment-discard="_handleCommentDiscard"></gr-diff-comment>
       </template>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread.js b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread.js
index 96f1bac..d8dccad 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread.js
@@ -40,7 +40,10 @@
       commentSide: String,
       patchNum: String,
       path: String,
-      projectConfig: Object,
+      projectName: {
+        type: String,
+        observer: '_projectNameChanged',
+      },
       isOnParent: {
         type: Boolean,
         value: false,
@@ -53,6 +56,7 @@
         type: Boolean,
         notify: true,
       },
+      _projectConfig: Object,
     },
 
     behaviors: [
@@ -352,5 +356,16 @@
     _computeHostClass(unresolved) {
       return unresolved ? 'unresolved' : '';
     },
+
+    /**
+     * Load the project config when a project name has been provided.
+     * @param {string} name The project name.
+     */
+    _projectNameChanged(name) {
+      if (!name) { return; }
+      this.$.restAPI.getProjectConfig(name).then(config => {
+        this._projectConfig = config;
+      });
+    },
   });
 })();
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread_test.html b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread_test.html
index 5a65f58..c96c031 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread_test.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-comment-thread/gr-diff-comment-thread_test.html
@@ -161,6 +161,17 @@
       lastComment.__draft = true;
       assert.equal(element._hideActions(showActions, lastComment), true);
     });
+
+    test('setting project name loads the project config', done => {
+      const projectName = 'foo/bar/baz';
+      const getProjectStub = sandbox.stub(element.$.restAPI, 'getProjectConfig')
+          .returns(Promise.resolve({}));
+      element.projectName = projectName;
+      flush(() => {
+        assert.isTrue(getProjectStub.calledWithExactly(projectName));
+        done();
+      });
+    });
   });
 
   suite('comment action tests', () => {
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html
index e39e6ec..70d19e5 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html
@@ -328,6 +328,7 @@
         path="[[_path]]"
         prefs="[[_prefs]]"
         project-config="[[_projectConfig]]"
+        project-name="[[_change.project]]"
         view-mode="[[_diffMode]]"
         on-line-selected="_onLineSelected">
     </gr-diff>
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html
index a638b296..7135601 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.html
@@ -229,6 +229,7 @@
           <gr-diff-builder
               id="diffBuilder"
               comments="[[comments]]"
+              project-name="[[projectName]]"
               diff="[[_diff]]"
               diff-path="[[path]]"
               view-mode="[[viewMode]]"
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
index cbbc7e4..94f60d9 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.js
@@ -58,6 +58,7 @@
         type: Object,
         observer: '_projectConfigChanged',
       },
+      projectName: String,
       displayLine: {
         type: Boolean,
         value: false,
@@ -305,8 +306,7 @@
       let threadGroupEl = this._getThreadGroupForLine(contentEl);
       if (!threadGroupEl) {
         threadGroupEl = this.$.diffBuilder.createCommentThreadGroup(
-            this.changeNum, patchNum, this.path, isOnParent,
-            this.projectConfig);
+            this.changeNum, patchNum, this.path, isOnParent);
         contentEl.appendChild(threadGroupEl);
       }
 
diff --git a/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text.js b/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text.js
index b26226e..d2436e7 100644
--- a/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text.js
+++ b/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text.js
@@ -60,7 +60,7 @@
       // request for it still being in flight), set the content anyway to
       // prevent waiting on the config to display the text.
       if (this.config) { return; }
-      this.$.container.textContent = content;
+      this._contentOrConfigChanged(content);
     },
 
     /**
diff --git a/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text_test.html b/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text_test.html
index fe5b92f..b1c536f 100644
--- a/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text_test.html
+++ b/polygerrit-ui/app/elements/shared/gr-formatted-text/gr-formatted-text_test.html
@@ -363,12 +363,10 @@
       assert.equal(result, expected);
     });
 
-    test('_contentOrConfigChanged not called without config', () => {
-      const contentStub = sandbox.stub(element, '_contentChanged');
-      const contentConfigStub = sandbox.stub(element, '_contentOrConfigChanged');
+    test('_computeNodes called without config', () => {
+      const computeNodesSpy = sandbox.spy(element, '_computeNodes');
       element.content = 'some text';
-      assert.isTrue(contentStub.called);
-      assert.isFalse(contentConfigStub.called);
+      assert.isTrue(computeNodesSpy.called);
     });
 
     test('_contentOrConfigChanged called with config', () => {