New
#31
There must be a clue in some change that occurred - originally about 'two weeks' before this started.
Do you have a disk image from that time- do you use disk imaging? So often recommended here so you can go back to a previously good state- restore your system to a new disk or even PC- have a full backup... e.g. Macrium Reflect (free).
Did you connect new hardware, install anything new, make any changes, receive updates..?
By way of a random experiment, create a new user for test purposes, log in as that user, and see if you see the same thing.