Wntiv Senyh

This could be fixed by postponing the rail's check for a block beneath it till the next tick (ie in the code check for unsupported rails BEFORE performing piston pushes, this would delay rail check to the next tick)

Surely just fix by making an item frame drop its item upon death, similar to how shulker box items do.

Try setting your "Graphics" option to "Fabulous!"

Im pretty sure that's an aquifer

Its supported on Chromebooks, just not Chrome OS. He said he is using Linux, so he should still be able to run it.

Have you checked your controls?

Esc > Options > Controls

It was using over 500% CPU at the time it was killed

You can't use more than 100% of the CPU

RaidID tag will be deleted if the game can't find a raid with that ID or the raider is outside of the range of that raid. Works As Intended. 

@Dhranios is right, since the villager has no work station, it immediately loses it's profession. Works as Intended. Try putting a workstation nearby.

What error message are you getting?

I have been doing command blocks for many years and have never come across this problem. Have you tried relogging, checking the "Previous Output" section or even just testing with a few "say hi" command blocks?

Definitely Works as Intended.

Does it say "Failed to login: null"? Because if so, this may be caused by the Microsoft account migration, somewhere in your Microsoft account options you should be able to enable/disable multiplayer. I think it's in privacy settings but I'm not sure. It may also be due to what age you put when creating a Microsoft account because if you are too young it might stop you from playing. One way to get around this is join a Microsoft Family at https://account.microsoft.com/family/. Otherwise, try looking around your Microsoft account settings https://account.microsoft.com/. Other than that, I can't help. Good Luck!

This issue is actually often caused by the Microsoft account migration, somewhere in your Microsoft account options you should be able to enable/disable multiplayer. I think it's in privacy settings but I'm not sure. It may also be due to what age you put when creating a Microsoft account because if you are too young it might stop you from playing. One way to get around this is join a Microsoft Family at https://account.microsoft.com/family/. Otherwise, try looking around your Microsoft account settings https://account.microsoft.com/. Other than that, I can't help. Good Luck!

This issue is actually often caused by the Microsoft account migration, somewhere in your Microsoft account options you should be able to enable/disable multiplayer. I think it's in privacy settings but I'm not sure. It may also be due to what age you put when creating a Microsoft account because if you are too young it might stop you from playing. One way to get around this is join a Microsoft Family at https://account.microsoft.com/family/. Otherwise, try looking around your Microsoft account settings https://account.microsoft.com/. Other than that, I can't help. Good Luck!

I want to say it's almost definitely a datapack???

This issue is actually often caused by the Microsoft account migration, somewhere in your Microsoft account options you should be able to enable/disable multiplayer. I think it's in privacy settings but I'm not sure. It may also be due to what age you put when creating a Microsoft account because if you are too young it might stop you from playing. One way to get around this is join a Microsoft Family at https://account.microsoft.com/family/. Otherwise, try looking around your Microsoft account settings https://account.microsoft.com/. Other than that, I can't help. Good Luck!

I dunno, maybe report this to PopOS, as Minecraft doesn't actually have much control over all of that.

This issue is actually often caused by the Microsoft account migration, somewhere in your Microsoft account options you should be able to enable/disable multiplayer. I think it's in privacy settings but I'm not sure. It may also be due to what age you put when creating a Microsoft account because if you are too young it might stop you from playing. One way to get around this is join a Microsoft Family at https://account.microsoft.com/family/. Otherwise, try looking around your Microsoft account settings https://account.microsoft.com/. Other than that, I can't help. Good Luck!

This issue is actually often caused by the Microsoft account migration, somewhere in your Microsoft account options you should be able to enable/disable multiplayer. I think it's in privacy settings but I'm not sure. It may also be due to what age you put when creating a Microsoft account because if you are too young it might stop you from playing. One way to get around this is join a Microsoft Family at https://account.microsoft.com/family/. Otherwise, try looking around your Microsoft account settings https://account.microsoft.com/. Other than that, I can't help. Good Luck!