10.5.20 Inserting automation nodes bug

I’ve had a few sessions on 10.5.20 where there are issues manually inserting automation nodes.

I enter one node ok, then try and enter another but nothing happens after I’ve clicked - I get nothing. So I try to write it again and again - nothing. Try once more, and now my first node disappears!

This is using the pencil tool to write onto an automation track.
Zoom and quantise settings make no difference.
It only seems to happen when I’ve already got automation on a track and I’m manually adding new points.

This is not a 100% repeatable issue on all sessions, but when it happens I have to wipe an area of automation nodes and just start again.


I have never seen this. Could you try in Cubase Safe Start Mode [Disable preferences], please?