diff --git a/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.ts b/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.ts
index 6f8bd9a..c2739f3 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.ts
+++ b/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog.ts
@@ -218,7 +218,6 @@
             <gr-autocomplete
               id="parentInput"
               .query=${this.query}
-              no-debounce
               .text=${this.text}
               @text-changed=${(e: ValueChangedEvent) =>
                 (this.text = e.detail.value)}
diff --git a/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog_test.ts b/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog_test.ts
index 776e923..2644d81 100644
--- a/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog_test.ts
+++ b/polygerrit-ui/app/elements/change/gr-confirm-rebase-dialog/gr-confirm-rebase-dialog_test.ts
@@ -74,7 +74,6 @@
             <gr-autocomplete
               allow-non-suggested-values=""
               id="parentInput"
-              no-debounce=""
               placeholder="Change number, ref, or commit hash"
             >
             </gr-autocomplete>
@@ -305,7 +304,6 @@
 
     test('input text change triggers function', async () => {
       const recentChangesSpy = sinon.spy(element, 'getRecentChanges');
-      element.parentInput.noDebounce = true;
       pressKey(
         queryAndAssert(queryAndAssert(element, '#parentInput'), '#input'),
         Key.ENTER
diff --git a/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls_test.ts b/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls_test.ts
index 31283ad..0729f21 100644
--- a/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls_test.ts
+++ b/polygerrit-ui/app/elements/edit/gr-edit-controls/gr-edit-controls_test.ts
@@ -217,16 +217,20 @@
       assert.isFalse(hideDialogStub.called);
       queryAndAssert<GrButton>(element, '#open').click();
       element.patchNum = 1 as RevisionPatchSetNum;
-      await waitUntilVisible(element.modal!);
+      await showDialogSpy.lastCall.returnValue;
       assert.isTrue(hideDialogStub.called);
       assert.isTrue(element.openDialog!.disabled);
       assert.isFalse(queryStub.called);
       // Setup focused manually - in headless mode Chrome sometimes doesn't
       // setup focus. waitEventLoop() doesn't help.
       openAutoComplete.focused = true;
-      openAutoComplete.noDebounce = true;
       openAutoComplete.text = 'src/test.cpp';
+      // Focus happens after updateComplete, so we first wait for it explicitly.
+      await new Promise<void>(resolve => {
+        openAutoComplete.addEventListener('focus', () => resolve());
+      });
       await element.updateComplete;
+      await openAutoComplete.latestSuggestionUpdateComplete;
       assert.isTrue(queryStub.called);
       await waitUntil(() => !element.openDialog!.disabled);
       queryAndAssert<GrButton>(
@@ -242,7 +246,6 @@
       queryAndAssert<GrButton>(element, '#open').click();
       await waitUntilVisible(element.modal!);
       assert.isTrue(element.openDialog!.disabled);
-      openAutoComplete.noDebounce = true;
       openAutoComplete.text = 'src/test.cpp';
       await element.updateComplete;
       await waitUntil(() => !element.openDialog!.disabled);
@@ -277,9 +280,13 @@
       // Setup focused manually - in headless mode Chrome sometimes doesn't
       // setup focus. waitEventLoop() doesn't help.
       deleteAutocomplete.focused = true;
-      deleteAutocomplete.noDebounce = true;
       deleteAutocomplete.text = 'src/test.cpp';
+      // Focus happens after updateComplete, so we first wait for it explicitly.
+      await new Promise<void>(resolve => {
+        deleteAutocomplete.addEventListener('focus', () => resolve());
+      });
       await element.updateComplete;
+      await deleteAutocomplete.latestSuggestionUpdateComplete;
       assert.isTrue(queryStub.called);
       await waitUntil(() => !element.deleteDialog!.disabled);
       queryAndAssert<GrButton>(
@@ -304,9 +311,13 @@
       // Setup focused manually - in headless mode Chrome sometimes doesn't
       // setup focus. waitEventLoop() doesn't help.
       deleteAutocomplete.focused = true;
-      deleteAutocomplete.noDebounce = true;
       deleteAutocomplete.text = 'src/test.cpp';
+      // Focus happens after updateComplete, so we first wait for it explicitly.
+      await new Promise<void>(resolve => {
+        deleteAutocomplete.addEventListener('focus', () => resolve());
+      });
       await element.updateComplete;
+      await deleteAutocomplete.latestSuggestionUpdateComplete;
       assert.isTrue(queryStub.called);
       await waitUntil(() => !element.deleteDialog!.disabled);
       queryAndAssert<GrButton>(
@@ -363,9 +374,13 @@
       // Setup focused manually - in headless mode Chrome sometimes doesn't
       // setup focus. waitEventLoop() doesn't help.
       renameAutocomplete.focused = true;
-      renameAutocomplete.noDebounce = true;
       renameAutocomplete.text = 'src/test.cpp';
+      // Focus happens after updateComplete, so we first wait for it explicitly.
+      await new Promise<void>(resolve => {
+        renameAutocomplete.addEventListener('focus', () => resolve());
+      });
       await element.updateComplete;
+      await renameAutocomplete.latestSuggestionUpdateComplete;
       assert.isTrue(queryStub.called);
       assert.isTrue(element.renameDialog!.disabled);
 
@@ -395,9 +410,13 @@
       // Setup focused manually - in headless mode Chrome sometimes doesn't
       // setup focus. waitEventLoop() doesn't help.
       renameAutocomplete.focused = true;
-      renameAutocomplete.noDebounce = true;
       renameAutocomplete.text = 'src/test.cpp';
+      // Focus happens after updateComplete, so we first wait for it explicitly.
+      await new Promise<void>(resolve => {
+        renameAutocomplete.addEventListener('focus', () => resolve());
+      });
       await element.updateComplete;
+      await renameAutocomplete.latestSuggestionUpdateComplete;
       assert.isTrue(queryStub.called);
       assert.isTrue(element.renameDialog!.disabled);
 
diff --git a/polygerrit-ui/app/elements/shared/gr-account-list/gr-account-list_test.ts b/polygerrit-ui/app/elements/shared/gr-account-list/gr-account-list_test.ts
index 6b4d670..cc2723e 100644
--- a/polygerrit-ui/app/elements/shared/gr-account-list/gr-account-list_test.ts
+++ b/polygerrit-ui/app/elements/shared/gr-account-list/gr-account-list_test.ts
@@ -401,8 +401,8 @@
     );
     input.text = 'newTest';
     input.input!.focus();
-    input.noDebounce = true;
     await element.updateComplete;
+    await input.latestSuggestionUpdateComplete;
     assert.isTrue(getSuggestionsStub.calledOnce);
     assert.equal(getSuggestionsStub.lastCall.args[0], 'newTest');
     await waitUntil(() => makeSuggestionItemSpy.getCalls().length === 2);
diff --git a/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.ts b/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.ts
index de97741..ab74e8b 100644
--- a/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.ts
+++ b/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete.ts
@@ -9,7 +9,11 @@
 import '../../../styles/shared-styles';
 import {GrAutocompleteDropdown} from '../gr-autocomplete-dropdown/gr-autocomplete-dropdown';
 import {fire, fireEvent} from '../../../utils/event-util';
-import {debounce, DelayedTask} from '../../../utils/async-util';
+import {
+  debounce,
+  DelayedTask,
+  ResolvedDelayedTaskStatus,
+} from '../../../utils/async-util';
 import {PropertyType} from '../../../types/common';
 import {modifierPressed} from '../../../utils/dom-util';
 import {sharedStyles} from '../../../styles/shared-styles';
@@ -150,12 +154,6 @@
   @property({type: Boolean, attribute: 'warn-uncommitted'})
   warnUncommitted = false;
 
-  /**
-   * When true, querying for suggestions is not debounced w/r/t keypresses
-   */
-  @property({type: Boolean, attribute: 'no-debounce'})
-  noDebounce = false;
-
   @property({type: Boolean, attribute: 'show-blue-focus-border'})
   showBlueFocusBorder = false;
 
@@ -183,6 +181,15 @@
 
   private updateSuggestionsTask?: DelayedTask;
 
+  /**
+   * @return Promise that resolves when suggestions are update.
+   */
+  get latestSuggestionUpdateComplete():
+    | Promise<ResolvedDelayedTaskStatus>
+    | undefined {
+    return this.updateSuggestionsTask?.promise;
+  }
+
   get nativeInput() {
     return (this.input!.inputElement as IronInputElement)
       .inputElement as HTMLInputElement;
@@ -254,11 +261,7 @@
   }
 
   override willUpdate(changedProperties: PropertyValues) {
-    if (
-      changedProperties.has('text') ||
-      changedProperties.has('threshold') ||
-      changedProperties.has('noDebounce')
-    ) {
+    if (changedProperties.has('text') || changedProperties.has('threshold')) {
       this.updateSuggestions();
     }
     if (
@@ -404,12 +407,7 @@
   }
 
   updateSuggestions() {
-    if (
-      this.text === undefined ||
-      this.threshold === undefined ||
-      this.noDebounce === undefined
-    )
-      return;
+    if (this.text === undefined || this.threshold === undefined) return;
 
     // Reset suggestions for every update
     // This will also prevent from carrying over suggestions:
@@ -462,15 +460,11 @@
         });
     };
 
-    if (this.noDebounce) {
-      update();
-    } else {
-      this.updateSuggestionsTask = debounce(
-        this.updateSuggestionsTask,
-        update,
-        DEBOUNCE_WAIT_MS
-      );
-    }
+    this.updateSuggestionsTask = debounce(
+      this.updateSuggestionsTask,
+      update,
+      DEBOUNCE_WAIT_MS
+    );
   }
 
   setFocus(focused: boolean) {
diff --git a/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete_test.ts b/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete_test.ts
index eb1efec..81949c7 100644
--- a/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete_test.ts
+++ b/polygerrit-ui/app/elements/shared/gr-autocomplete/gr-autocomplete_test.ts
@@ -391,7 +391,6 @@
 
     element.query = queryStub;
     await element.updateComplete;
-    element.noDebounce = false;
     focusOnInput();
     element.text = 'a';
 
@@ -413,7 +412,6 @@
   test('empty text results in no suggestions', async () => {
     element.text = '';
     element.threshold = 0;
-    element.noDebounce = false;
     await element.updateComplete;
     assert.equal(element.suggestions.length, 0);
   });
@@ -475,7 +473,6 @@
       assert.equal(element.suggestions.length, 1);
       element.text = '';
       element.threshold = 0;
-      element.noDebounce = false;
       await element.updateComplete;
       assert.equal(element.suggestions.length, 0);
     });
@@ -494,7 +491,6 @@
       await waitUntil(() => element.queryErrorMessage === 'Test error');
       element.text = '';
       element.threshold = 0;
-      element.noDebounce = false;
       await element.updateComplete;
       assert.isUndefined(element.queryErrorMessage);
     });