diff --git a/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-diff-highlight.ts b/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-diff-highlight.ts
index d5c7d8e..094f2d7 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-diff-highlight.ts
+++ b/polygerrit-ui/app/elements/diff/gr-diff-highlight/gr-diff-highlight.ts
@@ -54,6 +54,8 @@
   rootId: string;
 }
 
+const DEBOUNCER_SELECTION_CHANGE = 'selectionChange';
+
 @customElement('gr-diff-highlight')
 export class GrDiffHighlight extends GestureEventListeners(
   LegacyElementMixin(PolymerElement)
@@ -88,6 +90,11 @@
     );
   }
 
+  /** @override */
+  detached() {
+    this.cancelDebouncer(DEBOUNCER_SELECTION_CHANGE);
+  }
+
   get diffBuilder() {
     if (!this._cachedDiffBuilder) {
       this._cachedDiffBuilder = this.querySelector(
@@ -123,7 +130,7 @@
     // ms, then you will have about 50 _handleSelection calls when doing a
     // simple drag for select.
     this.debounce(
-      'selectionChange',
+      DEBOUNCER_SELECTION_CHANGE,
       () => this._handleSelection(selection, isMouseUp),
       10
     );
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor.ts b/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor.ts
index 034081d..9fafcfa 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor.ts
+++ b/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor.ts
@@ -64,6 +64,8 @@
  */
 const MAX_GROUP_SIZE = 120;
 
+const DEBOUNCER_RESET_IS_SCROLLING = 'resetIsScrolling';
+
 /**
  * Converts the API's `DiffContent`s  to `GrDiffGroup`s for rendering.
  *
@@ -123,6 +125,7 @@
   /** @override */
   detached() {
     super.detached();
+    this.cancelDebouncer(DEBOUNCER_RESET_IS_SCROLLING);
     this.cancel();
     this.unlisten(window, 'scroll', '_handleWindowScroll');
   }
@@ -130,7 +133,7 @@
   _handleWindowScroll() {
     this._isScrolling = true;
     this.debounce(
-      'resetIsScrolling',
+      DEBOUNCER_RESET_IS_SCROLLING,
       () => {
         this._isScrolling = false;
       },
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.ts b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.ts
index f6f80b3..7946061 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.ts
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.ts
@@ -291,6 +291,7 @@
 
   /** @override */
   detached() {
+    this.cancelDebouncer(RENDER_DIFF_TABLE_DEBOUNCE_NAME);
     super.detached();
     this._unobserveIncrementalNodes();
     this._unobserveNodes();