Langdon Staab

Yep seems broken.

Now the title screen is broken and flashes.

Probably. Will test.

That’s the way Minecraft is.

This is not a bug per se, but a request for an improvement.

Always make backups; preferably to an external drive.

Check your saves folder.

The RAM option actually has nothing to do with it, but it went away right after I changed it.

Strange.

The GPU is likely at fault, though it works for OpenCL fine.

It can run BOINC just fine.

This is a new problem.

But in 25w20a it still happens, no matter what.

It turns out the issue was I changed -Xmx2G to -Xms2G in the minecraft game options.

Why would that cause this issue?

That is bizzare!

1.21.4 , 1.21.2, 1.21, 1.20.6 are fine.

I am assuming 1.21.4 and below are all fine.

This did not used to happen.

1.20.6 does not have this issue.

1.21.5 has the same problem actually.

This is actually not specific to Minecraft.

macOS Terminal history sometimes randomly becomes inaccessible.

I think the only way to fix it is to use the GUI; command-line options don’t seem to work at all.

Maybe try running the server.jar and making a superflat world that way.

See if it prints out an error in the log.

Did it used to let you?

I don’t remember that ever being a thing.

I could be wrong tho.

Probably some rendering issue.

Weird.

What OS are you using?

Try this:

1. Make a backup of the world to a safe, exteral HDD (not flash memory).

2. Look through the data files.

Accroding to the Minecraft wiki:

“Maps do not store their information in the item; instead, they save a map number in the minecraft:map_id component that corresponds to the map number (ID) of a saved file. Their information is placed in the "data" directory within the world's save directory.

In Java Edition each map has its own file associated with its ID, and there is one file that keeps track of the highest (most recently created) map ID.“

Maybe the filenames got screwed up?

Maps are acting kinda broken in general recently.

How do you know the pistons aren’t at fault.

BTW, observers can’t see the leafy top of bamboo, only the stem, for some reason.

I think the growing of crops/bamboo/sugar cane that are not near a Player is handled on a separate low-priority Thread.

Redstone+crops can result in really weird behavior when the player is far away.

I had an automatic pumpkin farm that usually outside any Player’s simulation distance.

The pistons broke the pumkins, but several pumpkin vines were still bent as if their pumpkin was still attached, when it wasn’t.

Servers now freeze when empty for 60 seconds, which probably explains your issue.

Perhaps that can be disabled?

Hmmmm….

Strange.

Seems to work fine for me.

BTW, AFAIK, Mojang actually releases minor changes and fixed that do not bear a version number. Try launching Minecraft while connected to internet to see if it has been fixed.