If you tried to type on a sign in previous updates, it would show a UI box in the shape of a sign to preview what your message would look like, but now it's completely covered by the Xbox chat UI, and makes it difficult to see if what you are typing will fit. And you can't see if you're choosing the right color when use "ยง". Same goes for text chat and especially when typing commands, you can't see in coming suggestions for said commands.
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We're tracking this issue in MCPE-156575, so this ticket is being resolved and linked as a duplicate.
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