I have heard reports of bleach effecting the factory glaze on porcelain tile. I have no first-hand information on this.
Some of the high alkaline dried on surface, noticed on higher parts of tile that dried first
Happens often on fridges that blow hot air out on bottom
Don't put it on your watch.It never dried on my watch.
YesDid you seal this job?
I have only seen this when my guys mixed the other product too strong and didn’t rinse thoroughly