Hair groom disappears in the middle of a sequence

General Issues and Bug Reporting
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1

I have a metahuman animation recorded in Take Recorder from a Live Link animation driven by iClone using Timecode sync. The animation looks good but in the middle of it the hair groom disappears from the Metahuman.

Curiously, if I have the spawned metahuman selected in the Outliner, the hair groom does not disappear. Here is a quick video that illustrates the problem:

I am curious whether anyone may have any ideas what might be going on here.

To get the usual questions out of the way:

  • the groom exists only at LOD 0 and LODSync forces the LOD to 0 for the groom.
  • the groom has a binding asset that binds it to the face skeleton
  • the groom disappears both when playing the sequence in the editor and when rendering via MRQ.
  • there are other moments in the sequence when the groom flickers in and out of existence but these are not easily repeatable

I appreciate any suggestions. Thank you!

2

Here is an example of the groom flickering in and out.

3

After hours of searching, it turns out that ticking “include component location into bounds” seems to resolve this issue as explained in this post

4

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