We've worked out at least a possible way this can occur from using uninitialized AnimatedNormals values when changing LODs. Ensuring all AnimatedNormals are initialized appears to fix the problem.
We do not have a solid repro internally, but we have a licensee that was able to get a repro, and we have a speculative fix.
The problem seems to occur when spawning at one LOD and then rapidly transitioning multiple LODs, e.g., from a camera change.
It appears that it only happens if you have ISPC enabled (default on most platforms).
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-222092 in the post.
| 0 |
| Component | UE - Simulation - Physics - Character |
|---|---|
| Target Fix | 5.5 |
| Fix Commit | 35829068 |
|---|
| Created | Aug 17, 2024 |
|---|---|
| Resolved | Aug 27, 2024 |
| Updated | Sep 3, 2024 |