Mob Bugs

I was breeding sheep in 1.14.1 and the pre-release of 1.14.2  and there were no particle effects showing, like hearts when they're in 'love mode' and green stars when feeding wheat to lambs. The same thing happened when I tried breeding two dogs I'd tamed, the heart particle effects didn't appear.

Also, when wet dogs sometimes go completely black. I don't know if this was intentional.