Try re-installing the launcher.
Oh, Alright. Thank you.
Have you tried re-installing the launcher?
If that didn't work, Try the below steps.
1. Press WIN+R
2. In the window that appeared type in %appdata%
3. Then, navigate to .minecraft folder.
4. After that, delete that folder.
5. Then, Try launching minecraft.
That will most probably re-install LWJGL and its following classpaths.
Can you post some picture or video evidence?
They are called tile entities.
Why did you post so many JSON's.
It might be server lag on your side. If your the owner of the server, Where did you host the server? And Can you put a screenshot of that happening?
If you click on it, It will redirect you to minecraft.fandom.com
WAI.
Your fps is low. That might be the problem because some blocks don't update when your fps is low.
The world generation has been switched to 1.16 style so you won't be able to build higher than y = 255.
Try re-installing Java.
There is a way you lock maps at the position. Get a Cartography table and a glass pane and use the map to lock it.
Can you list your PC Specs here.
Can you attach a screenshot of the F3 Screen?
This might be because your map is locked at the position.
Try re-installing Java. If that doesn't work try resetting your computer.
You can wait 30 days to change your name or you can contact Mojang Support.
WAI.
Please provide a Crash log. Or try re-installing your game.
If that doesn't fix it. Try re-installing your graphics drivers.