Thanks for trying it out Rich, good to know it's not just me and on 3.0.6 also.
I've found the extra behaviour varies, sometimes it does more things, sometimes just the locking, I guess depending on what's in the image.
I suppose it's going to want a bug report unless there's already one.
I'm not familiar with doing that or finding the right terms for searching for existing bugs in gitlab.
Edit: Reported it here:
https://gitlab.gnome.org/GNOME/gimp/-/issues/15242
I've found the extra behaviour varies, sometimes it does more things, sometimes just the locking, I guess depending on what's in the image.
I suppose it's going to want a bug report unless there's already one.
I'm not familiar with doing that or finding the right terms for searching for existing bugs in gitlab.
Edit: Reported it here:
https://gitlab.gnome.org/GNOME/gimp/-/issues/15242