Intended?

I just started playing windows 10 version of Minecraft, well The Minecraft (Better Together.) I noticed that Chests will refuse to open if a slab is above it (this doesn't happen in Java) but I shrug it off as intended, but then, I noticed that chests wouldn't open with Mobs (a cow here) was standing on it. Didn't know if this was intended, I hope not (annoying honestly) If i see something else, I'll add it.

Apologies, couldn't find a ticket with mob issue.

EDIT: This could be another ticket but I just realized that the cow is trapped on top of my chest!
Edit 2: To add that i was playing on a friends world who was on an android phone and another friend was on xbox.