Tick timer keeps running after calling destroy

[kiran-dcunha]

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

What version of Shaka Player are you using?
4.3.2

Can you reproduce the issue with our latest release version?
Yes

Can you reproduce the issue with the latest code from main?
Did not try

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

If custom app, can you reproduce the issue using our demo app?
Did not check

What browser and OS are you using?
Mac/Chrome

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

What are the manifest and license server URIs?

What configuration are you using? What is the output of player.getConfiguration()?

Default

What did you do?

Start the playback. Stop (destroy).

added a snippet to print which timers are running -
window.setTimeoutOriginal = window.setTimeout; window.setTimeout = (func, delay) => {console.log("setTimeout", func); return window.setTimeoutOriginal(func, delay)}

What did you expect to happen?
Player should stop executing

What actually happened?

There is a tick timer that runs continuously. Screenshot is after destroy.

[theodab]

Looks like we aren't releasing shaka.media.RegionTimeline when we destroy the player, and that class has a timer in it.