Preview filed doesn't stop playing after close it!

{first of all I’m sorry about my English, I’m not native}
I have some short video about idioms (they’re cut from movies in webm format so anki shows them ) and some audio and when I close preview tab they will be still playing and no way to stop them until finished by themselves and if open another preview tab they will not stop but new video starts to play and make confusing situation (they play together) and if set video in loop mode with html codes they will not stop until close whole program
at the end thank for your attention and hope can convey my meaning!

What Anki version are you using? I believe this was fixed in the latest version (2.1.49).

Related: High Memory Usage over time on 2.1.44


thanks a million!!! I really appreciate you sir, I used version 1.47, I feel left in dust.