Double clicking to change track name doesn't work

I can’t change the track name from by double clicking on the track name or in the lhs track inspector.
Before I could rename tracks by double clicking then holding shift to rename the actual track file.
This no longer works. The only place I can rename a track is in the mixer at the bottom.
This is a big problem as I use multi midi tracks (in Kontakt for example) - mapped to various audio outputs. Renaming a track in the mixer won’t change the corresponding midi track name - there is no way I can do this now.
Only sounds minor - but it makes 13 unusable for now.
Windows 10 Pro AMD Ryzen 9


Could you try in the Cubase Safe Start Mode or rename/remove the Cubase preferences folder, please?