Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 785] Array index out of bounds: 2 from an array of size 2
1. Open the attached project
2. Open New Map
4. Move to the left until you bump the collision
5. Exit PIE
6. Open the AI Controller
7. Select the AI Perception Stimuli Source and check Auto Register As Source
8. Compile & Save
10. Bump into the collision on the left again
Result: Editor crashes
Expected: No crash would occur.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-29939 in the post.