diff --git a/abstract/Block.js b/abstract/Block.js
index a69fa1df..61918f5c 100644
--- a/abstract/Block.js
+++ b/abstract/Block.js
@@ -209,6 +209,8 @@ export class Block extends BaseComponent {
 
   /** @protected */
   destroyCallback() {
+    super.destroyCallback();
+
     let blocksRegistry = this.blocksRegistry;
     blocksRegistry?.delete(this);
 
diff --git a/blocks/CloudImageEditor/src/elements/slider/SliderUi.js b/blocks/CloudImageEditor/src/elements/slider/SliderUi.js
index 88feacd6..811572d5 100644
--- a/blocks/CloudImageEditor/src/elements/slider/SliderUi.js
+++ b/blocks/CloudImageEditor/src/elements/slider/SliderUi.js
@@ -163,6 +163,7 @@ export class SliderUi extends Block {
   }
 
   destroyCallback() {
+    super.destroyCallback();
     this._observer?.disconnect();
   }
 }