In Unity Playworks when setting a video for a PlaygroundAsset video field the other playable stops responding shows a blank screen and does not start
This is a know issue and could be due to the HTML video source tag not being in-lined in the video tag (as shown in the example below).
<video id="endVideo" autoplay muted>
<source id="asset/endVideo" src="data:video/mp4;base64," type="video/mp4">
</source>
</video>
Possible solution:
Change the source tag to be in-lined in the video tag.
For example:
<video id="asset/endVideo" autoplay muted src="data:video/mp4;base64," />