html component iframe bug

Using the reworked html compontent:

For example embedding an youtube video via iframe and playing it - then changing to another json url (via tabs for example) keeps the video sounds running, the app gets less stable as well as will often crash. Might also lead to other bugs i could imagine.

No source file, test, or entry point is identified in the issue. First reproduce the problem by playing an embedded YouTube iframe, switching to another JSON URL through tabs, and observing audio, stability, and crashes; done means the previous video stops cleanly and switching content no longer causes the reported instability.

Written by the indexing model from the issue text.