Bug description

Often, after applying an effect to a selection, the UI will no longer respond to keyboard shortcuts (the mouse still works), and the state of the play, pause, and stop buttons may no longer reflect whether playback is currently happening.

Opening the audio configuration menu and clicking "Accept" fixes both these issues until another effect is applied.

Steps to reproduce

1. New Stereo Track
2. Select a couple seconds of the track by clicking and dragging on the new track
3. Generate > Pluck
4. Accept
5. Attempt to start playback by pressing the Space bar, note that nothing happens
6. Attempt to split clip by pressing Ctrl+I, note that nothing happens
7. Play entire clip by clicking the play button and waiting for playback to finish, note that stop button does not grey out at end of playback

Expected behavior

Keyboard shortcuts should continue to work. Stop button should be clickable during playback, and greyed out after playback ends.

Actual behavior

No response

Audacity Version

Audacity 3.7.1

Operating system

Linux

Additional context

distro openSUSE Tumbleweed
desktop environment is xcfe
audio host is ALSA, PortAudio V19.7.0-devel