Disable space bar play/pause.
Pressing the space bar is supposed to pause and start playback. If you are asking for that to be a configurable option, then your post belongs in Feature Requests.
Or are you having an issue with the function?
I will play it in feature request. It would allow me to type on the computer while listening to music.
The space bar only affects playback if Roon is the active window. I can start playback, and switch to this forum, for example and type all I want with the space bar and not affect playback.