AI with katiba (silencer on) from about 60-70m range shooting through the wall im behind on second floor. Kalocheri, Altis. AI shot through all areas of that wall. Not just under the window.
Check images for exact location.
I have seen more walls being invisible (or non collidable) since the latest updates. Especially on houses. This is the only one i have images of atm. Will search for more.