Do floor and wall tiles absorb Adhesive?

there are some adhesive that are used with a latex mixture which will stop the adhesive from actually soaking into the tiles itself. Plus, if you used an old adhesive (sometimes got from the store shelf) that will have condensation (water) inside of the container and that will cause you to apply water to the backs of the tiles. This should dry up, (in the front of the tiles) but if not you may need to pull a few off to replace some. You can do this after grouting, just to make sure the tiles do fade back into color. Of course, not if the entire job is like the affected ones. Then it's other project. Good luck!!!