so, i use a workman key layout in windows, and minecraft changes the keys for copy/paste/etc combinations. now this is done to make things easier for people with non-qwerty keyboards. but, that means in minecraft, you need to press ctrl + m to copy, and press ctrl + c to paste. this actually makes the gameplay worse, because it can make many things confusing.

How to replicate:

1. go to workmanlayout.org and download the .zip file
2. unzip the file and open windows-installer-workmanus then open setup.exe.
3. this installs the workman keyboard layout on your computer. now open minecraft and try copying and pasting.