Typing to many characters in a book lag the game and can't be remove

You aren't reporting the bug correctly. 

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https://help.minecraft.net/hc/en-us/articles/360039268071-Writing-Helpful-Bug-Reports-for-Minecraft-?flash_digest=53b01725cbbf3f1677bf257923ea1030fcd9a528

Ok sorry I will report correctly

Thank you for your report!
We're already tracking these issues at MCPE-41772 and MCPE-63905, so I will resolve and link this ticket as a duplicate.

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