diff --git a/polygerrit-ui/app/elements/core/gr-keyboard-shortcuts-dialog/gr-keyboard-shortcuts-dialog.ts b/polygerrit-ui/app/elements/core/gr-keyboard-shortcuts-dialog/gr-keyboard-shortcuts-dialog.ts
index 25173b4..45ba33b 100644
--- a/polygerrit-ui/app/elements/core/gr-keyboard-shortcuts-dialog/gr-keyboard-shortcuts-dialog.ts
+++ b/polygerrit-ui/app/elements/core/gr-keyboard-shortcuts-dialog/gr-keyboard-shortcuts-dialog.ts
@@ -61,7 +61,6 @@
           display: block;
           max-height: 100vh;
           min-width: 60vw;
-          overflow-y: auto;
         }
         main {
           display: flex;
diff --git a/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea.ts b/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea.ts
index 169cd59..dd08544 100644
--- a/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea.ts
+++ b/polygerrit-ui/app/elements/shared/gr-textarea/gr-textarea.ts
@@ -234,9 +234,7 @@
       hiddenText in order to correctly position the dropdown. After being moved,
       it is set as the positionTarget for the emojiSuggestions dropdown. -->
       <span id="caratSpan"></span>
-      ${this.renderEmojiDropdown()}
-      ${this.renderMentionsDropdown()}
-      </gr-autocomplete-dropdown>
+      ${this.renderEmojiDropdown()} ${this.renderMentionsDropdown()}
       <iron-autogrow-textarea
         id="textarea"
         class=${classMap({noBorder: this.hideBorder})}
diff --git a/polygerrit-ui/app/tsconfig.json b/polygerrit-ui/app/tsconfig.json
index 0ddf130..98aaf0f 100644
--- a/polygerrit-ui/app/tsconfig.json
+++ b/polygerrit-ui/app/tsconfig.json
@@ -47,7 +47,7 @@
     "lib": [
       "dom",
       "dom.iterable",
-      "es2020",
+      "es2021",
       "webworker"
     ],
 
diff --git a/polygerrit-ui/app/utils/string-util.ts b/polygerrit-ui/app/utils/string-util.ts
index 9955f68..81dcde1 100644
--- a/polygerrit-ui/app/utils/string-util.ts
+++ b/polygerrit-ui/app/utils/string-util.ts
@@ -40,7 +40,7 @@
  * contain spaces and colons.
  */
 export function escapeAndWrapSearchOperatorValue(value: string): string {
-  return `"${value.replace('\\', '\\\\').replace('"', '\\"')}"`;
+  return `"${value.replaceAll('\\', '\\\\').replaceAll('"', '\\"')}"`;
 }
 
 /**
diff --git a/polygerrit-ui/app/utils/string-util_test.ts b/polygerrit-ui/app/utils/string-util_test.ts
index c6c65b1..d6c4187 100644
--- a/polygerrit-ui/app/utils/string-util_test.ts
+++ b/polygerrit-ui/app/utils/string-util_test.ts
@@ -10,6 +10,7 @@
   ordinal,
   listForSentence,
   diffFilePaths,
+  escapeAndWrapSearchOperatorValue,
 } from './string-util';
 
 suite('string-util tests', () => {
@@ -84,4 +85,11 @@
       fileName: 'COMMIT_MSG',
     });
   });
+
+  test('escapeAndWrapSearchOperatorValue', () => {
+    assert.equal(
+      escapeAndWrapSearchOperatorValue('"value of \\: \\"something"'),
+      '"\\"value of \\\\: \\\\\\"something\\""'
+    );
+  });
 });
diff --git a/polygerrit-ui/app/workers/service-worker-class.ts b/polygerrit-ui/app/workers/service-worker-class.ts
index f9cc591..1c54158 100644
--- a/polygerrit-ui/app/workers/service-worker-class.ts
+++ b/polygerrit-ui/app/workers/service-worker-class.ts
@@ -131,9 +131,12 @@
     // User can have different service workers for different origins/hosts.
     // TODO(milutin): Check if this works properly with getBaseUrl()
     const data = {url: `${self.location.origin}${changeUrl}`};
-
-    // TODO(milutin): Add gerrit host icon
-    this.ctx.registration.showNotification(change.subject, {body, data});
+    const icon = `${self.location.origin}/favicon.ico`;
+    this.ctx.registration.showNotification(change.subject, {
+      body,
+      data,
+      icon,
+    });
     this.sendReport('notify about 1 change');
   }
 
@@ -141,7 +144,8 @@
     const title = `You are in the attention set for ${numOfChangesToNotifyAbout} changes.`;
     const dashboardUrl = createDashboardUrl({});
     const data = {url: `${self.location.origin}${dashboardUrl}`};
-    this.ctx.registration.showNotification(title, {data});
+    const icon = `${self.location.origin}/favicon.ico`;
+    this.ctx.registration.showNotification(title, {data, icon});
     this.sendReport(`notify about ${numOfChangesToNotifyAbout} changes`);
   }