After discussing it internally with the staff team and conducted testing on that particular scenario, it is somehow a bug that somehow rarely happens that makes solid walls passable, I myself can attest that this happened to me as well in loc s96 that accidentally in mid duel in all sudden I can walk through walls that I can't explain how it happened nor was trying to reproduce it.
Decent and Diaz was tasked in investigating with this matter and somehow managed to reproduce it for several times and concluded that it is a VCMP bug. So by this i'm voiding this report.