Server sees client mantling animation incorrectly in multiplayer (UE 5.4 / 5.6)

[dashixiong47]

Describe the bug
When a player performs a mantling (climbing) animation in a multiplayer game, the animation playback appears incorrect on the server’s view of the client. Specifically, the server sees the client’s pawn performing the mantling animation improperly, even though the client itself plays it correctly. Other clients see each other correctly, and the client sees the server correctly.

This issue exists in UE 5.4 and seems more severe in UE 5.6.

To reproduce

Launch a multiplayer game.

Have one client perform a mantling action.

Observe the animation playback on the server’s view of that client.

Expected behavior
The server should see the mantling animation of the client correctly, in sync with the client’s playback.

5.4

5.6