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TextTracks replicating when loading streams [propose: bug?}

Created by: TheHedge

Wondering if this is a known issue. I was using the dash.js code, building a player and noticed that if I loaded one manifest and then a second (or third) that the text tracks present in one manifest are being retained by all subsequent ones.

I initially thought that I was just not using the dash.js APIs correctly but then noticed that even the sample players at http://dashif.org/reference/players/javascript/1.1.2/index.html have the same issue.

  1. Load the Caption Test (Elephant Dream) stream and a single closed caption line is visble.
  2. Load the 4K (tears of steel) stream and the captions from Elephant Dream continue to be displayed at the same position (time-wise) as if the Elephant Dream was still playing.
  3. Select and Load Caption Test again and now two captions are presented.

Each time you select and load the Capton Test, an additional closed caption line is presented.

I am testing this on a Win7 platform using Chrome v34.0.1847.131 m.

Is this a known issue? Thanks