You already know what to do but I have a good? story. I got a job replacing floor tile in a large custom kitchen. Dishwasher had leaked and all the tile nearby came loose and was buckling up. After pulling up the loose tiles I found the issue was there was a bunch of overspray on the slab from when they shot the drywall texture on. The places they didn’t clean it off first turned back to mud when it got wet & the tiles came right off. Where they did clean the mud off first I had to chip the tile off with a demo hammer and it would chip the top of the slab before the thinset would release in those spots.