diff --git a/addons/addon-webgl/src/WebglRenderer.ts b/addons/addon-webgl/src/WebglRenderer.ts
index e985bf2ef..83f20c9e7 100644
--- a/addons/addon-webgl/src/WebglRenderer.ts
+++ b/addons/addon-webgl/src/WebglRenderer.ts
@@ -30,7 +30,7 @@ import { createRenderDimensions } from 'browser/renderer/shared/RendererUtils';
 
 export class WebglRenderer extends Disposable implements IRenderer {
   private _renderLayers: IRenderLayer[];
-  private _cursorBlinkStateManager: MutableDisposable<CursorBlinkStateManager> = new MutableDisposable();
+  private _cursorBlinkStateManager: MutableDisposable<CursorBlinkStateManager> = this._register(new MutableDisposable());
   private _textBlinkStateManager: TextBlinkStateManager;
   private _charAtlasDisposable = this._register(new MutableDisposable());
   private _charAtlas: ITextureAtlas | undefined;
diff --git a/src/browser/services/RenderService.ts b/src/browser/services/RenderService.ts
index ada3df307..83e3d3379 100644
--- a/src/browser/services/RenderService.ts
+++ b/src/browser/services/RenderService.ts
@@ -68,7 +68,7 @@ export class RenderService extends Disposable implements IRenderService {
   ) {
     super();
 
-    this._pausedResizeTask = new DebouncedIdleTask(this._logService);
+    this._pausedResizeTask = this._register(new DebouncedIdleTask(this._logService));
 
     this._renderDebouncer = new RenderDebouncer((start, end) => this._renderRows(start, end), this._coreBrowserService);
     this._register(this._renderDebouncer);
diff --git a/src/common/TaskQueue.ts b/src/common/TaskQueue.ts
index 6f3b40bc4..3cad0a140 100644
--- a/src/common/TaskQueue.ts
+++ b/src/common/TaskQueue.ts
@@ -168,4 +168,8 @@ export class DebouncedIdleTask {
   public flush(): void {
     this._queue.flush();
   }
+
+  public dispose(): void {
+    this._queue.clear();
+  }
 }