Sorry I'm unsure if this one has already been covered, but I couldn't find it mentioned anywhere at a quick glance...
I just found a glitch on the Farmhouse map whilst playing tonight.
Here's a clip showing the glitch:
Basically, you can climb over the barricade near the "D" objective and go out of bounds.
Once there, you can't get back... You're trapped out of bounds until you die (or venture further out of bounds).
You can also capture / contest the "D" objective whilst in the very corner of the fence line... Which makes it kind-of a game breaking bug!