Setting a ParticleSystem component in a Blueprint to none/null with a "Set Template" node causes the editor and the packaged project to crash. I have noticed this when migrating my game to 4.22, which makes use of variables to set and unset particle effects on certain actors. This is a regression from 4.21.2 (CL-4753647).
This was reported and tested in 4.22 (CL-5660361). This was reproduced in Main 4.23 (CL-5745677).
Results: The editor crashes when previewed in-editor. The packaged game crashes with a "Fatal error!"
Expected: The project does not crash
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-72356 in the post.