Stopwatch does not keep screen on after changing apps

Expected Behavior

Screen should be on if active stopwatch is visible.

Current Behavior

If stopwatch is temporarily switched to some other app, after returning screen is locked after usual time instead of keeping it on.

Possible Solution

Steps to Reproduce

1. Open clock app and start stopwatch
2. Use switch apps button to go back to previous app and use it again to go back to stopwatch
3. Wait to see if screen is kept on

/device sailfish /version lineage-17.1 /date 2020-06-27 /mods Google Apps, F-Droid

I have read the directions.