Apparently, whenever I give a raccoon some food, they don't go to wash it in a nearby water source, even if it is right next to them.
It seems I can't tame them either, which I believe is part of the same issue since the taming process include washing the egg I give them, and since they don't/can't wash.
Weirdly enough, they still end up eating the food, they just dont wash it beforehand.

Ok, I did some more test: it seems that they can actually wash food... but only in naturally occuring waters. It seems that they dont want to touch water placed by players for some reason. Is this supposed to happen ?
If yes, is there some rules that I need to follow when creating "washing spots" so that raccoons go to it ?
(I know this is supposed to be for bug reports, not asking for help, but it did started as a bug report, and now I don't know where to ask about this...)