Hoikas/Plasma — comment on commit e32fb9b9e248b03b8715904b9a4c0c70b1309cc1
File:  line 0
By Hoikas:

If you push a duplicate camera to the stack and expect to pop them both off, it might. But I feel that if you do that, then you're doing it wrong(TM). As far as I can tell, duplicate cameras are only pushed in edge cases. For example, the stack is restored from a spawn point, then a duplicate is pushed on region collision--this actually causes the camera to get stuck in the duplicate camera brain, which this commit fixes.