I am using Audacity from the Ubuntu Store and I normally use the app to listen and clean audio from a video.
In the project I have then two tracks about 30-50 minutes long, and when I am listening, I use to stop/play the audio with the keyboard (space key).
Sometimes (many times) it crashes, I think it is when I press more than once the “space”, so it says NoMore…
The app freezes and I have to close it forcing close and recover the project
This is a known problem when using PulseAudio as the playback device (PulseAudio is also the default).
To workaround the problem, select the “hw” device of your sound card in the Device Toolbar (https://manual.audacityteam.org/man/device_toolbar.html)
It’s usually the “(hw:0,0)” option that you need to use. The full name depends on what sound card you have, for example, on my laptop it is:
HDA Intel PCH: ALC269VC Analog (hw:0,0)
This problem is believed to be fixed in Audacity 2.4.0 which is due to be released next month.