Bachsau

Just rename the app and you’re done.

This looks very much like what I experienced when my graphics card died from memory defects.

There normally isn’t a “logs” subfolder if you don’t run the game in it’s default location. That folder is created by the java client and therefore part of the profile/installation.

I think there should be a single UUID that's shared by all demo players.

Your questions are unreasonable and not applicable to the problem. Therefore I infer that you're unwilling and/or too lazy to implement the required changes. Of course it's always easiest to make up reasons so you can dismiss the problem. Unfortunately, bad quality control is something I can do nothing about. Have a nice day.

What details do you want? I think I gave every information there is. If you don't understand the request please inform yourself. Here's some more information on the updated gamertags in case you don't know what I'm talking about: https://support.xbox.com/en-US/help/account-profile/profile/gamertag-update-faq

When this bug was opened, Minecraft did not prefer IPv6. After Microsoft purchased Mojang, IPv6 support was removed completely, and it won't return anytime soon, as bad as that is. Microsoft is an enemy of IPv6. None of their services is available via IPv6. Microsoft does not adopt new technology unless they are absolutely forced to.

No, @Tiya tehJak, it has nothing to do with whatever you're trying. Please do not hijack other people's threads. This Bug is about the minecraft profile directories that can be set in the launcher.

@joezim007 A player should never expect the game to crash and never worry about it. Things can work or not but should never result in a crash.

Why not just remove the 1 extra damage for all mobs?

@C.J. Bennett: Right click your minecraft save folder, choose "properties", then "security" tab. Use Google and/or Wikipedia for further information on Windows access rights. However, this was an on-topic comment and might not effect your problem, which I think is not part of any bug at all.

If you think it is, please open another bug report! This one is about misplaced chunks, not about animals spawning in unexpected places.

Particles from hard materials should be removed completely. It looks weird. You won't whirl up dust when running on stone, wood or glass.

@C.J. Bennett: No, it doesn't help anyone if you grab some random bug report and talk about something completely different. Furthermore I can't find anything buggy in what you describe.

Look like some sort of file access problems. Check your access rights and filesystem.

But I still don't get why it continues to start when it can read neither level.dat nor level_dat.old. It definitely shouldn't!

Using the java launcher on Linux all old versions are able to use their directory completely, so it's at least possible.

Hey, Mojang! This seems very special. Don't you think it is definitely worth further investigation even if only a small number of players is affected?

How could a screenshot help anyone with something that can only be observed in a moving environment? o_O
You can test this by running around a while in any survival world. Maybe I can post a screencap video when I have time to and find it important enough to install a tool for this. 😉

Played on Minecraft Realms in a default survival world on Ubuntu Linux 14.04 with latest Java from Oracle using attached options.txt

Try using the Java Launcher. Mojang has proven itself incapable of coding a working native launcher.

Is it possible that this is somehow dependant on how old a boat is? I just tried to land some old boats floating around and always died. However, when I crafted a new boat and drove that into dock, I got no damage. In neither case I was in any boat longer than a few seconds. Minecraft 1.8.9.