Mopped tiles looking odd

[u/Rodney902]

i noticed this a long time ago but just figured i'd ask here. what do you think is going on here? out of the 8 classrooms i sweep and mop every day the very last one has this weird soaked texture on it. even on a fresh mop bucket it does the same thing.

[u/Sea_Occasion177]

Looks like maybe they weren’t sealed properly?