Don't know where or if any current invisible wall thread is still active, but there was a time when people were submitting info and someone in PGI was actually actively dealing with these issues eventually.
Anyway the worst offender imo is Helleborne because unlike other maps a lot of fighting happens around the front end of the gun.
See rangefinder.
Wall

no wall

Edited by Ghogiel, 21 July 2015 - 08:41 AM.