Hi, I was using overlay materials because they are pretty awesome, but then they just randomly stopped working. Literally they were working one play and then the next they no longer worked. Anyone using them without issue?
Hey Tbunreal,
If you think this might be a bug, please submit a bug report! We want 5.1 to be as issue-free as possible when it actually releases, and we need user input like yours! You can do that directly from the editor, just go to help>submit a bug report. Overlay materials randomly disabling could be a really big deal, so as much information as we can get would be very helpful!
I asked here because unfortunately I don’t know how to reproduce it 
No worries! You can send with just the information you have. Chances are you aren’t the only one, and if you attach the logs at the bottom, we can aggregate it with any available data from everyone who has the issue. I’d just put “on restart” as the reproduction. 
ok, I’ll see what I can do
I submitted a bug report, but after messing around in the project more. It seems to be an issue with the basicShapeMaterial and basic_wall material. Maybe others, but overlays seem to work with other materials.