Same problem , i got this bug in Minecraft Windows 10 1.13 beta and still not fixed in 1.14
You can ask another player to left the game
Then you change your skin
And another player change their skin
And rejoin Your world
Its work for me
(Sorry for bad English)
Rajendra Aryasatya Permana
Same problem , i got this bug in Minecraft Windows 10 1.13 beta and still not fixed in 1.14
You can ask another player to left the game
Then you change your skin
And another player change their skin
And rejoin Your world
Its work for me
(Sorry for bad English)