fix: duration change should not be throttled for duration display update

src/js/control-bar/time-controls/duration-display.js

@@ -23,14 +23,15 @@ class DurationDisplay extends TimeDisplay {
   constructor(player, options) {
     super(player, options);
 
-    this.on(player, [
-      'durationchange',
+    // we do not want to/need to throttle duration changes,
+    // as they should always display the changed duration as
+    // it has changed
+    this.on(player, 'durationchange', this.updateContent);
 
-      // Also listen for timeupdate (in the parent) and loadedmetadata because removing those
-      // listeners could have broken dependent applications/libraries. These
-      // can likely be removed for 7.0.
-      'loadedmetadata'
-    ], this.throttledUpdateContent);
+    // Also listen for timeupdate (in the parent) and loadedmetadata because removing those
+    // listeners could have broken dependent applications/libraries. These
+    // can likely be removed for 7.0.
+    this.on(player, 'loadedmetadata', this.throttledUpdateContent);
   }
 
   /**

src/js/control-bar/time-controls/time-display.js

@@ -48,7 +48,7 @@ class TimeDisplay extends Component {
       'aria-live': 'off'
     }, Dom.createEl('span', {
       className: 'vjs-control-text',
-      textContent: this.localize(this.contentText_)
+      textContent: this.localize(this.controlText_)
     }));
 
     this.updateTextNode_();
@@ -63,7 +63,7 @@ class TimeDisplay extends Component {
    * @private
    */
   updateTextNode_() {
-    if (this.textNode_) {
+    if (this.textNode_ && this.contentEl_ && this.contentEl_.contains(this.textNode_)) {
       this.contentEl_.removeChild(this.textNode_);
     }
     this.textNode_ = document.createTextNode(this.formattedTime_ || '0:00');