Flash Player 25 - issues with sound in video

Experiencing issues with stopping sound in videos (while video is playing, move to new page ===> video-sound keeps playing).

The ability to stop video-play (and sound) has been in place and working in our solution for years - now wit v 25, it suddenly doesn't. Still works fine in v24!

What has changed in the latest version that affects even basic functionalities like this? Anyone else experiencing this?