fix: Fix reusing region elements in UITextDisplayer (#6476)

Fixes #6341
shaka-project · Apr 24, 2024 · 4302a6b · 4302a6b
1 parent 84b2f8e
commit 4302a6b
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/lib/text/ui_text_displayer.js b/lib/text/ui_text_displayer.js
@@ -345,6 +345,9 @@ shaka.text.UITextDisplayer = class {
         const cueRegistry = this.currentCuesMap_.get(cue);
         goog.asserts.assert(cueRegistry, 'cueRegistry should exist.');
         if (cueRegistry.regionElement) {
+          if (cueRegistry.regionElement.contains(container)) {
+            cueRegistry.regionElement.removeChild(container);
+          }
           container.appendChild(cueRegistry.regionElement);
           cueRegistry.regionElement.appendChild(cueRegistry.cueElement);
         } else {