Thanks, but that link brings up an error message.
Problem still persists, and is now happening 100% of the time. I am beginning to lose more hair - and I don't have a lot to spare.
I am beginning to think that either I have discovered a bug (unlikely since no one else really seems to have experienced this to the level I have), there is a weird corruption in my Catalog file or some mismatch between my OSX 11.6 and recent versions of LR CC.
I have:
Re-set preferences by restarting LR holding down the control and R keys;
Run Disk Utility and Diskwarrior on all disks and discovered that Diskwarrior will repair disk permissions so did that as well;
Uninstalled LR CC from the Creative Cloud and then updated.
Optimised the Catalog
The problem continues and appears to be related to the Custom Filter from the Keyword List.
My normal workflow is to filter photos via keywords, so I have, let us say 200 photos with the same keyword. Sending a Raw File to PS and then saving it results in PS saving the Tiff to the right folder and the keyword count rises by 1 - so there are now (theoretically) 201 photos with the same keyword. But the new Tiff is not visible when filtered via that keyword. But if I turn Filters off - so have all photos in my catalog visible then it is there. Only when I restart LR does it appear in in the keyword filtered selection.
No idea what is happening or why. But I wonder if my catalog is somehow glitched if not corrupted. I suppose the next step is to go back to an earlier backup. At least the problems are mostly related to Tiffs so losing edits in the History panel won''t affect them. But still a lot of work. I have been using LR since version 1 and have never ever had such a problem.
I might try and contact Adobe. Anyone got a route to contacting customer support that works?
Thanks
Specifically:
https://www.lightroomqueen.com/how-do-i-reset-lightrooms-preferences/