Multyplayer is switching off when I'm entering the world

Hello there 👋 I play on the version of Minecraft  Pocket Edition. 1.12.0 and I found a bug that annoys me very much So when I enter on my world with multyplayer on   I enter the world them immediately switches to off and you may be thinking you are with a restricted skin no I'm not I just puted my skeepy skin. And I tried with a skin from marketplace and still doesn't work and it's on mobile data btw