It looks like project you attached is missing its Contents folder, so there’s no MyActor. If you could and attach that .uasset we can look into it. I wasn’t able to reproduce this, so if you can’t get us that asset please give us some details on how it was set up. Thanks!
Ah, I didn’t realize you had created a new class. I was able to reproduce issue you described, and have entered a bug report for our developers to look at (UE-6902). I’ll let you know when I see an update. Thanks for report!