Slight problem in Graveyard - Invisibility

I've been doing multiple graveyard games, and sometimes when the shades (or possibly generally any player) go behind walls they are not able to be seen or heard. It's quite problematic for the humans because we'll need to see the shadows if we're going to survive. I have noted that also sometimes I see their character slim just before they reappear. 

Please fix this Rezoner, as it is a hassle to just stay alive/away from the shades, now with this, we can barely even see where they went.

Yours truly, Seraph of Vigilantes.

~P.S. Maybe you made it a feature, maybe it's not supposed to do that, I don't know. All I know is that it's rather troubling.