After joining a world my girlfriend had been playing for a while, menu screen, loading resources and bed buttons appeared all together overlaid and then it crashed. I joined the world and the same thing happened to me. We had to use MC toolchest to delete the player and to be able to finally play the world again.
Sorry for the bad quality image but it crashes immediately and it wasn't possible to take a proper screenshot.
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Thank you for your report!
We're actually already tracking this issue at MCPE-79465, so I will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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