Minecraft will freeze when I click any GUI buttons anywhere (after disconnecting from a server) in the Main, SinglePlayer World Select, or MultiPlayer Server Select menus.
What I expected to happen was...:
Doing what the button normally does. (ie Selecting world or Server)
What actually happened was...:
The game froze, and didn't provide an error report
Steps to Reproduce:
1. Log In
2. Connect to a server (Stay on for a while)
3. Disconnect
4. You may notice that all servers in the list will be polling forever. If you try to click on any button, the bug happens.
Additional Information:
In Windows Task Manager, in the "Processes" tab, after the bug happens you can use "End Process" and it will quit minecraft, but the Java Process doesn't end. If you re-open minecraft, it will make a NEW java process, and this continually happens. After a while (without restarting your computer)you will have TONS of Java processes running.
This bug is especially happening when you click on a server that is still loading. (ie while the blue thingy that normally tells how good of a connection you have is moving from left to right)
"Bugpt1.PNG" depicts before the bug happens while using minecraft
"Bugpt2.PNG" is AFTER the bug happened twice, and with minecraft open. (2 are un-endable w/o logging off, while 1 of them can be ended by closing minecraft)
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Comments 16
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.
@Tails I haven't seen it in 1.4.5, so I guess that it is now fixed, but I am not entirely sure.

Ok, thanks for the update. Resolving for now, if you see the issue again, please report here.
It just happened to me twice today in 12w49a. Changing the title again.
New screenshot. It is what my task manager looks like now. :/
I did a bit of researching the bug. I updated the steps to reproduce
Well I finally found a topic that has the same problem. They have a fix for it, but it requires modding minecraft. MC-1408
Mod, please mark my topic as duplicate of MC-1408
Done 🙂
Might be related. I'm also getting Random freezes on 1.4.4 mostly when trying to create a flat world. But I'm able to load a previous flat and play for about 1 min when it freezes.