So it is not file specific, it happens in all files I have tested, so I went back to our template file, it seems to impact 4 layers, 2 that can't be hidden, 1 that can't be unlocked and 1 that can't be hidden or unlocked.
These are part of our standard template. Changing their status in attribute manager has no effect.
An interesting/odd note is that they are layers with attribute numbers 2 thru 5, so it's the first four (the Archicad layer is #1).
I have also found that the zooming/panning really is not part of the issue, it just lets you see the problem. If I go into the layer dialog, select all, hide all and unlock all, click OK, then immediately go back into the layer dialog box those 4 layers have reverted to their stuck state, without having zoomed/panned, or anything else for that matter.
kevin s burns, AIA
massachusetts, usa
AC25 (1413), since AC6
Windows 10
Intel Core i7 -8700 @ 3.2 GHz~ 16 GB ram