Writing in Minecraft no longer works?

Mi
2

When playing Minecraft on the Java Edizion I noticed that the shifting no longer works. Do I have to reinstall Minecraft now? I noticed it when I had the Minecraft Java Edition and the Minecraft Poket Edition open at the same time. Later I noticed that by right clicking in the crafting table I can no longer distribute all the blocks, only one comes out. I also noticed that the animations work like in the Poket Edition. I don't know what else to do, because that's pretty upset. I would be very happy to receive an answer.

an

Can you sneak with Shift? Only the shifting in the inventory is not possible?

Then you switched on the "touchscreen mode".

How to disable it:

Press Escape → Options → Controls → Set touchscreen mode (at the top) to OFF.

Mi

Thanks a lot.