Ok so I can't move things from chests with shift click, I have to drag the item. This is the same with Hypixel bedwars. When I buy something I need to drag the thing I am buying into a free space in the shop or inventory. This has been happening the whole day, and it is basically impossible to do anything now. Don't tell me to turn off touch screen, because my computer doesn't have touch screen.
Linked issues
duplicates
Comments
Touchscreen mode can be enabled even if you don't have a touch screen, it's purely a setting in the game.

Thank you for your report!
We're tracking this issue in MC-5130, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
-- I am a bot. This action was performed automatically! Please report any issues on Discord or Reddit
You enabled touchscreen mode, which is supposed to work like this. Disable it in the control settings to get regular controls back.