1: This one is minor, but you can get stuck when you try to vault over the wall from the top of A capture point, down to the street
It happens at the "curved" parts of the wall and easy to get out of it, by going prone.
2-4: Now this one is strange, I am not even sure about it!
If you throw a C-4 to these wooden branches, sometimes it bounces of like in other situations. Sometimes the explosive seems to stick to them and even the texture seems to change on it!
All screenshots contain coordinate info.