If turn a BSP flipped the next to this brush turn invisible/hidden. Image: https://dl.dropboxusercontent.com/u/28070491/UE/Forums/HideBug.png

Hi Hevedy, Thank you for reporting this issue. It has already been logged with ticket UE-1169, although this issue is currently backlogged and will be resolved at a later date. There is no timeframe for when this will be worked on though. This is the original post that the issue was reported with:…