Bug of the chat on the new version of Minecraft

Hello! I'm a Minecraft Windows 10 Mobile player and today I have downloaded the new version of the game. I have founded one particular bug on all my worlds, on realm and on the servers: the CANC button don't work!!! If I write anything wrong on the command bar, or on a sign and I want to cancel it, I can't because the CANC button don't work, and on an older version of Minecraft it worked normally. Please fix this bug in a future version of the game.
Thanks