[bug] 4.7 bsp errors

My project currently heavily relies on BSP. On older versions I never had a single issue. On 4.7 I’m having a lot of issues even on small maps. Since this issue is fairly random, I’m not sure what to tell you in terms of reproducing it. Its odd though because a side will vanish and when I select the brush the missing side will come back. When I deselect the brush it vanishes again. Sometimes I can fix it by moving the brush away and then back. However the error may move or it might return to the same place after building. Occasionally it doesn’t return after a rebuild.