Pocket edition acts like it has a mouse. This has no toggle off for some reason.
Steps to reproduce
join a world on PE
move finger and watch box under it light up green
check setting for an option to turn this off
there is no way to turn this off currently and in the block choose menu it messes with scrolling up and down. This seems to be part of many changes to Pocket Edition that are aimed at Bedrock Edition as a whole without considering PE players. Things like this need toggles so they don’t mess with the playability of PE.
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