Additionnal skeletal mesh on a character disappear depending the camera angle

Since the 4.19 version, our cinematics with character have some skeletal parts disappearing when the camera move.

Our character has a default skeletal mesh with only the head mesh and a skeletal.
We add at runtime (init) a second child mesh with same skeletal for the body skin
I checked the “use parent bound for visibility” in this new mesh, some other flags.

Sometime, in the cinematic, the body disappear (I check in PIE and we have the same problem when moving the camera manually.

It’s a 4.19 new behavior, because we don’t have any problem like this in the 4.18


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I understand, but it’s a bit complicated to give a bug reproduction.
In 4.18 our cinematics works in 4.19 they don’t.

Something change around the visibility of child mesh in characters, but we can’t figure what.
If we ask to display the collisions (ShowCollision command) the meth is visible again.

I can enter a “true” bug report, but I’m not sure it will help you, and we don’t have much time to create a simple test case.