diff --git a/CHANGELOG.md b/CHANGELOG.md
index d1b6e738..4130a9e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 - Fixed `source` view supported syntaxes to list modes with no mime
 - Fixed editor's hint popup positioning when widget is not fit into the page bounds
 - Added `options` parameter for `loadDataFromUrl()` which is passing as is into `fetch()` as second argument
+- Changed `Widget#setContainer()` to append only if container is an instance of `Node`
 
 ## 1.0.0-beta.57 (04-03-2021)
 
diff --git a/src/widget/index.js b/src/widget/index.js
index 5cfaa080..54c9a74f 100644
--- a/src/widget/index.js
+++ b/src/widget/index.js
@@ -524,7 +524,11 @@ export default class Widget extends Emitter {
     }
 
     setContainer(container) {
-        container.append(this.dom.wrapper);
+        if (container instanceof Node) {
+            container.append(this.dom.wrapper);
+        } else {
+            this.dom.wrapper.remove();
+        }
     }
 
     disposeDom() {