Bug Report - UE4 crash when changing material function category

I’ve got a bit of a bug in UE4.12.0 (binary version). When making material functions, if I edit the text inside the ‘Library Categories Text’ input (In the details panel under “Material Function” when nothing is selected), UE4 crashes instantly. This happens every time without fail, on new functions and functions that I’ve brought over from previous versions of the engine.

Hey D.Smith,

Thanks for the clear description of the crash. I was able to reproduce the issue in 4.12, and have gone ahead and entered a bug report which can be tracked on our Public Issues pages by following the link below.

UE-31722

Once the bug has been addressed by the engineers a fix will be added to an upcoming full engine release or hotfix. Let me know if you have further questions or need additional assistance.

Cheers,

I can second encountering this problem.

I have experienced this as well several times and is reproducable everytime.