Editor crash when anim notifies overlap (100% reproducible)

I have encountered a crash when using the editor with 100% reproducibility. The crash, for me, occurs when I work on the notifies track of a montage, although I am not sure if it’s limited only to that.

Steps to reproduce:

  1. Create an anim montage

2)Add an anim notify right at the end

  1. Add another notify

  1. Now drag the “End Attack” notify to overlap the “Enable transition” notify

  1. After this, if I now try to click and drag the “End Attack” notify again, The editor crashes with the following call stack

Hi, thanks for the reply. I’m glad to be of help, and to know that the issue has been fixed. I had been using multiple notify tracks to avoid this, and also for lesser clutter. It was never a catastrophic issue, but now there’s one less bug in the UE4 world…


Thanks for bringing this to our attention. I have taken the steps to reproduce this and I can confirm it on my end in version 4.16. I have also tested it in version 4.17 and it seems to have been fixed. Feel free to convert your project up to test it there and let me know if it continues. Also, you can put notifies on different tracks and it shouldn’t cause a crash.