Hello.
I have upgraded my project from 5.1 to 5.2 recently and I immediately stumbled on a new bug, which I had never encountered before.
I have modular character based of Character class, it has a separate head and arms skeletal meshes, connected to main skeletal mesh via Set Leader Pose Component
and some static mesh accessories such as hair and weapon.
At some point in game skeletal meshes start to randomly detach from the character and they stop all animations. It seems to happen very randomly, I can’t yet understand how anything could lead to this behavior… Order of the detachment is different every time. And it affects any character, not only modular ones.
Here is a video demonstration of a bug. Head detaches first, then a book (physics object), then main mesh (clothes). Arms seem to be still attached, but not animated anymore.
https://drive.google.com/uc?id=1auP4BvizQKEoa60-2H8MtvjKtpK-kJQe
This problem started appearing only after the upgrade and it only appears in packaged game, I couldn’t replicate it in the engine. Also it seems the problem is only on Simulated Proxy.
I am stuck and I have no idea why this would even happen, it must be some new bug in the engine…