When i install Doodads and CustomSkinLoader together on minecraft vanilla server, the second layered skin and cape disappear regardless of whether online-mode are opened.But it is normal in single-player mode.
Server version:1.18.2

Could I get the full mod list and mod versions?

I've done a huge stupid thing.It should use the core downloaded from the fabric official website, while I used the minecraft vanilla core.So the mods didn't load correctly.Very sorry for wasting your time X_X Please forgive me