do not fix bad change on initial timeline change.

src/segment-loader.js

@@ -414,8 +414,9 @@
   const pendingMainTimelineChange = timelineChangeController.pendingTimelineChange({ type: 'main' });
   const hasPendingTimelineChanges = pendingAudioTimelineChange && pendingMainTimelineChange;
   const differentPendingChanges = hasPendingTimelineChanges && pendingAudioTimelineChange.to !== pendingMainTimelineChange.to;
+  const isNotInitialPendingTimelineChange = hasPendingTimelineChanges && pendingAudioTimelineChange.from !== -1 && pendingMainTimelineChange.from !== -1;
 
-  if (differentPendingChanges) {
+  if (isNotInitialPendingTimelineChange && differentPendingChanges) {
     return true;
   }
 
@@ -424,7 +425,7 @@
 
 export const fixBadTimelineChange = (segmentLoader) => {
   if (!segmentLoader) {
     return;
   }
   segmentLoader.pause();
   segmentLoader.resetEverything();
@@ -2156,7 +2157,7 @@
       })
     ) {
       if (shouldFixBadTimelineChanges(this.timelineChangeController_)) {
         fixBadTimelineChange(this);
       }
       return false;
     }
@@ -2219,7 +2220,7 @@
       })
     ) {
       if (shouldFixBadTimelineChanges(this.timelineChangeController_)) {
         fixBadTimelineChange(this);
       }
       return false;
     }