Cannot hide captions

[TheModMaker]

Have you read the FAQ and checked for duplicate open issues?
Yes

What version of Shaka Player are you using?
v2.5.0-beta3-124-g3721797c

Can you reproduce the issue with our latest release version?
No

Can you reproduce the issue with the latest code from master?
Yes

Are you using the demo app or your own custom app?
Demo app

If custom app, can you reproduce the issue using our demo app?

What browser and OS are you using?
Chrome on Linux

For embedded devices (smart TVs, etc.), what model and firmware version are you using?

What are the manifest and license server URIs?

Any asset, tested with first Angel One clip.

What did you do?

• Enable captions.
• Observe displayed captions.
• Set captions to "Off"

What did you expect to happen?
Captions should disappear.

What actually happened?

Captions remain.