Crash when using a Self reference with a Custom Event variable that is using Pass By Reference. The crash only seems to occur if the setup was created in the Player Controller class.
This was originally reported back as far as 4.9 but the original reporter let the post die without responding back. Another user reported it in 4.15 P1 and I was able to track down a repro.
Repro project with logs attached.
Crash Reporter: [Link Removed]
1. Open the attached test project
Results: The editor will crash as soon as PIE is clicked
Expected: For the editor to not crash but throw an error as to why this setup doesn't work. It would probably be preferable that the BP throw an error/warning on compile.
Head over to the existing Questions & Answers thread and let us know what's up.