diff --git a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
index 95e813a..1b918db 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
@@ -104,6 +104,10 @@
         type: Object,
         computed: '_computeCommentSkips(_commentMap, _fileList, _path)',
       },
+      _panelFloatingDisabled: {
+        type: Boolean,
+        value: () => { return window.PANEL_FLOATING_DISABLED; },
+      },
     },
 
     behaviors: [
@@ -718,5 +722,11 @@
 
       return skips;
     },
+
+    _computeDiffClass(panelFloatingDisabled) {
+      if (panelFloatingDisabled) {
+        return 'noOverflow';
+      }
+    },
   });
 })();