Keyboard navigation of range elements on Firefox

[dvoracek-slub]

Note: This is basically same as #2027. That issue concerns IE and is closed as "will not implement" because IE isn't supported anymore, but the issue also occurs in Firefox.

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

What version of Shaka Player are you using? 3.3.2

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

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

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

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

What browser and OS are you using? Linux Mint 20.1, Firefox 97.0

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

What are the manifest and license server URIs? Any

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

What did you do? Focus on volume bar (or seek bar) and use the arrow keys to change the value.

What did you expect to happen? Volume is adjusted in small steps.

What actually happened? Volume jumps to 0 or 1.

[prakhar3062]

are you working on it