Sorry if this has already been reported but I couldn’t find it using numerous search terms…
On Cubase 11 on Windows 10, before and after latest version 11.0.20, when doing a lot of manual automation (having R set and using the pointer to add an event on the track) with mute sometimes the playback shows the mute properly responding to automation but the track does not actually unmute.
This also affects export/audio mixdown.
Saving the project, closing the project, and reloading it clears the problem but if more automation is done the same problem will occur sooner or later (as far as I can tell at a different place.)
So far this seems random. I have not figured out a way to force it to happen other than going through a track and doing lots of mutes and unmute automation entries.