When using the arrow keys to move the cursor to edit something previously types, the typing cursor being displayed doesn't move as much as the cursor itself, so the cursor is offset from typing or deleting things actually happens, so its difficult to tell where you're typing. It seems to happen for every space the cursor passes.
Thank you for your report!
We're actually already tracking this issue at MCPE-56207, 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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