Reproduction steps:
1. Open the attached project "Project Folder"
2. Open the scene "Main"
3. Build for windows (haven't tested others)
4. Open two instances of the game
5. On one select LAN Host(H) -> Client Ready
6. On the other one select LAN Client(C) -> Client Ready
7. Move using WASD keys on both client and server
8. Notice that on the client both pacmen animate correctly. On the server, client's pacman is not animating.

Not sure that it's not a regression. The project would get corrupted if I opened it with versions prior to 5.1.0b2.
If it needs to be checked I can recreate the project.