skin doesnt update in singleplayer after rejoin only in multiplayer or COMPLETE game restart

If i change my skin in the launcher, it does not update when i re-join my singleplayer world. However, in multiplayer it works fine. But if i want my new skin to appear in my singleplayer world, i have to restart the game.

Ps: I know the video is in 1.17 but the bug also occurs on the latest version.
Ps: I know skins dont update realtime.