Just to add to data. This is completely random behaviour. Once it gets stuck it stays stuck. Enabling/Disabling instrument will clear it but obviously that doesn’t work for tracks that aren’t instruments.
I have added an android tablet recently for automation (faders etc) and it was working flawlessly. I’ve not seen the write stick when actually using the faders on the tablet. Always on mouse entered writes in real time. However, I removed my tablet and have run without it for the last few days thinking that might be the issue, but has happened twice without that device plugged in.
Only other device connected is my controller (Arturia Keylab 88 MkII)
Hope this helps.