Two threads were posted at the same time, that's never happened before. I have combined them into one thread.
Duplicate Thread by Granama
Pleasant solve. Full grid, hidden hint found early on. Can guess the 'earlier situation'. Still staring at the grid trying to work out what to change. 😁
Reply by Muraria
I haven't actually changed anything. I also have an 'earlier situation' that leaves real words but I'm not wholly convinced.