diff --git a/java/com/google/gerrit/server/mail/send/MailSoySauceLoader.java b/java/com/google/gerrit/server/mail/send/MailSoySauceLoader.java
index ad1703d..8ee8fc2 100644
--- a/java/com/google/gerrit/server/mail/send/MailSoySauceLoader.java
+++ b/java/com/google/gerrit/server/mail/send/MailSoySauceLoader.java
@@ -14,8 +14,9 @@
 
 package com.google.gerrit.server.mail.send;
 
+import static com.google.common.base.Preconditions.checkArgument;
+
 import com.google.common.io.CharStreams;
-import com.google.common.io.Resources;
 import com.google.gerrit.server.config.SitePaths;
 import com.google.gerrit.server.plugincontext.PluginSetContext;
 import com.google.inject.Inject;
@@ -26,6 +27,7 @@
 import com.google.template.soy.shared.SoyAstCache;
 import java.io.IOException;
 import java.io.Reader;
+import java.net.URL;
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
@@ -137,6 +139,8 @@
     }
 
     // Otherwise load the template as a resource.
-    builder.add(Resources.getResource(logicalPath), logicalPath);
+    URL resource = this.getClass().getClassLoader().getResource(logicalPath);
+    checkArgument(resource != null, "resource %s not found.", logicalPath);
+    builder.add(resource, logicalPath);
   }
 }
diff --git a/java/com/google/gerrit/testing/InMemoryModule.java b/java/com/google/gerrit/testing/InMemoryModule.java
index b9daa13..86ceb60 100644
--- a/java/com/google/gerrit/testing/InMemoryModule.java
+++ b/java/com/google/gerrit/testing/InMemoryModule.java
@@ -37,6 +37,7 @@
 import com.google.gerrit.server.FanOutExecutor;
 import com.google.gerrit.server.GerritPersonIdent;
 import com.google.gerrit.server.GerritPersonIdentProvider;
+import com.google.gerrit.server.LibModuleType;
 import com.google.gerrit.server.PluginUser;
 import com.google.gerrit.server.api.GerritApiModule;
 import com.google.gerrit.server.api.PluginApiModule;
@@ -243,13 +244,19 @@
     bind(AllChangesIndexer.class).toProvider(Providers.of(null));
     bind(AllGroupsIndexer.class).toProvider(Providers.of(null));
 
-    String indexTypeCfg = cfg.getString("index", null, "type");
-    IndexType indexType = new IndexType(indexTypeCfg != null ? indexTypeCfg : "fake");
-    // For custom index types, callers must provide their own module.
-    if (indexType.isLucene()) {
-      install(luceneIndexModule());
-    } else if (indexType.isFake()) {
-      install(fakeIndexModule());
+    // Index lib module has a higher priority than index type configuration.
+    String indexModule =
+        cfg.getString("index", null, "install" + LibModuleType.INDEX_MODULE_TYPE.getConfigKey());
+    if (indexModule != null) {
+      install(indexModule(indexModule));
+    } else {
+      String indexTypeCfg = cfg.getString("index", null, "type");
+      IndexType indexType = new IndexType(indexTypeCfg != null ? indexTypeCfg : "fake");
+      if (indexType.isLucene()) {
+        install(luceneIndexModule());
+      } else if (indexType.isFake()) {
+        install(fakeIndexModule());
+      }
     }
     bind(ServerInformationImpl.class);
     bind(ServerInformation.class).to(ServerInformationImpl.class);
diff --git a/plugins/BUILD b/plugins/BUILD
index 7862b1c..32efa3e 100644
--- a/plugins/BUILD
+++ b/plugins/BUILD
@@ -64,6 +64,7 @@
     "//java/com/google/gerrit/server/logging",
     "//java/com/google/gerrit/server/schema",
     "//java/com/google/gerrit/server/util/time",
+    "//java/com/google/gerrit/proto",
     "//java/com/google/gerrit/util/cli",
     "//java/com/google/gerrit/util/http",
     "//java/com/google/gerrit/util/logging",
diff --git a/polygerrit-ui/app/elements/admin/gr-access-section/gr-access-section.ts b/polygerrit-ui/app/elements/admin/gr-access-section/gr-access-section.ts
index 8fa2e90..2c83ed3 100644
--- a/polygerrit-ui/app/elements/admin/gr-access-section/gr-access-section.ts
+++ b/polygerrit-ui/app/elements/admin/gr-access-section/gr-access-section.ts
@@ -403,9 +403,9 @@
     permission: PermissionArrayItem<EditablePermissionInfo>
   ): string | undefined {
     if (this.section?.id === GLOBAL_NAME) {
-      return this.capabilities?.[permission.id].name;
+      return this.capabilities?.[permission.id]?.name;
     } else if (AccessPermissions[permission.id]) {
-      return AccessPermissions[permission.id].name;
+      return AccessPermissions[permission.id]?.name;
     } else if (permission.value.label) {
       let behalfOf = '';
       if (permission.id.startsWith('labelAs-')) {
diff --git a/polygerrit-ui/app/elements/admin/gr-access-section/gr-access-section_test.ts b/polygerrit-ui/app/elements/admin/gr-access-section/gr-access-section_test.ts
index f4d81c4..1c4c437 100644
--- a/polygerrit-ui/app/elements/admin/gr-access-section/gr-access-section_test.ts
+++ b/polygerrit-ui/app/elements/admin/gr-access-section/gr-access-section_test.ts
@@ -224,6 +224,12 @@
         element.capabilities![permission.id].name
       );
 
+      permission = {
+        id: 'non-existent' as GitRef,
+        value: {rules: {}},
+      };
+      assert.isUndefined(element.computePermissionName(permission));
+
       element.section.id = 'refs/for/*' as GitRef;
       permission = {
         id: 'abandon' as GitRef,
diff --git a/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view.ts b/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view.ts
index 76259b9..c4bafac 100644
--- a/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view.ts
+++ b/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view.ts
@@ -449,8 +449,8 @@
               >Save changes</gr-button
             >
           </fieldset>
-          <gr-edit-preferences id="editPrefs"></gr-edit-preferences>
-          <gr-menu-editor></gr-menu-editor>
+          <gr-edit-preferences id="EditPreferences"></gr-edit-preferences>
+          <gr-menu-editor id="Menu"></gr-menu-editor>
           <h2
             id="ChangeTableColumns"
             class=${this.computeHeaderClass(this.changeTableChanged)}
diff --git a/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view_test.ts b/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view_test.ts
index ae42619..6a8f575 100644
--- a/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view_test.ts
+++ b/polygerrit-ui/app/elements/settings/gr-settings-view/gr-settings-view_test.ts
@@ -369,8 +369,8 @@
               Save changes
             </gr-button>
           </fieldset>
-          <gr-edit-preferences id="editPrefs"> </gr-edit-preferences>
-          <gr-menu-editor> </gr-menu-editor>
+          <gr-edit-preferences id="EditPreferences"> </gr-edit-preferences>
+          <gr-menu-editor id="Menu"> </gr-menu-editor>
           <h2 id="ChangeTableColumns">Change Table Columns</h2>
           <fieldset id="changeTableColumns">
             <gr-change-table-editor> </gr-change-table-editor>
diff --git a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api.ts b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api.ts
index 79c73f1..82528cd 100644
--- a/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api.ts
+++ b/polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-change-actions-js-api.ts
@@ -133,19 +133,16 @@
 
   setActionOverflow(type: ActionType, key: string, overflow: boolean) {
     this.reporting.trackApi(this.plugin, 'actions', 'setActionOverflow');
-    // TODO(TS): remove return, unclear why it was written
     this.ensureEl().setActionOverflow(type, key, overflow);
   }
 
   setActionPriority(type: ActionType, key: string, priority: ActionPriority) {
     this.reporting.trackApi(this.plugin, 'actions', 'setActionPriority');
-    // TODO(TS): remove return, unclear why it was written
     this.ensureEl().setActionPriority(type, key, priority);
   }
 
   setActionHidden(type: ActionType, key: string, hidden: boolean) {
     this.reporting.trackApi(this.plugin, 'actions', 'setActionHidden');
-    // TODO(TS): remove return, unclear why it was written
     this.ensureEl().setActionHidden(type, key, hidden);
   }
 
@@ -156,7 +153,6 @@
 
   remove(key: string) {
     this.reporting.trackApi(this.plugin, 'actions', 'remove');
-    // TODO(TS): remove return, unclear why it was written
     this.ensureEl().removeActionButton(key);
   }