ExplodingBottle

Of course! Here is it: MCL-24122

Hello,

Here I come with the reproduction steps and the videos showcasing the bug:

First you need to step up the environnement:

1. Download a copy of the Minecraft Server from the official wiki: https://minecraft.fandom.com/wiki/Java_Edition_Alpha_server_0.2.8

2. Launch it once, then type stop to shut it down.

3. Edit server.properties to turn online-mode=true into online-mode=false

4. Start the server again.

The environnement is now set up. Now we do the test:

1. Inside the Minecraft Launcher, choose the Alpha 1.2.6

2. Launch it

3. Go into multiplayer and type localhost.

4. Notice that your username has been totally forgotten by the server, and instead you are called something like PlayerVVV where VVV is a 3-digit number.

You can find the media

which shows the bug fixed with the added parameter, and

which shows the current situation (buggy)

Also sorry for the media quality - this ticket can now be reopened as all the informations are now present.

Also, note that the change has a side effect, at least for alpha 1.2.6: when closing it, the launcher will think that it crashed. (It can easily be fixed by patching the LegacyLauncher component:

Changing:

System.exit(1);

to

System.exit(0);

at line 91 in file src/main/java/net/minecraft/launchwrapper/injector/AlphaVanillaTweakInjector.java

)

Hello,

The problem is that the versions don't care about the already download resources folder. They absolutely want to download them again from a server which is now down.

For Minecraft Classic c0.30_01c, I already made a pull request to fix this issue.

https://github.com/Mojang/LegacyLauncher/pull/32

Hello,

Here are the in-depth reproduction steps:

1. Install Minecraft Launcher for Minecraft Java Edition

2. Log in with your Microsoft/Mojang account

3. Go to configurations

4. Click New Configuration

5. Enter as name: Minecraft 1.8.9

6. Select the icon: Cake

7. Select version: 1.8.9

8. Go to JVM arguments: change -Xmx2G to -Xmx4G

9. Press Create

10. Navigate to Play Tab

11. Press the Play button

12. Check I understand risks

13. And press play

14. Wait for it to download the game...

15. Press quit game.

NOTE: Certains of these elements are certainly useless because I'm saying what I'm exactly doing.

And I notice that this bug is fixed in the last version, as it now downloads the x64 version instead of the x86 version !

Have a nice day.

Hello,

In Minecraft Bedrock Edition,

There is a parameter called simulation distance.

If a block or an entity is outside a point starting at your position and ending at simulation distance, the entity or block will stop to move.

Try to change the simulation distance.

Anyway, have a nice day !

That's not a parsing problem,

It's doing the same with a parameter only for x86 architecture.

The parameter -Xss1M should be included only on x86 architecture as showed by the rule:
            {
                "rules": [
                    {
                        "action": "allow",
                        "os": {
                            "arch": "x86"
                        }
                    }
                ],
                "value": "-Xss1M"
            }
 
[Info: 2021-05-23 17:05:10.6442246: ClientStarter.cpp(904)] Java argument:-Xss1M
But, In the log, we can see:

[Info: 2021-05-29 16:57:39.8812304: Common.cpp(41)] x64: true
So, the Launcher doesn't recognise correctly the system architecture !

So, the Launcher just don't use this value.

Hello,

As you can see in the log, I've deleted the library that was not using the correct architecture.

It looks that there is a problem while parsing.

 
"downloads": {
                "classifiers": {
                    "natives-osx": {
                        "path": "tv/twitch/twitch-platform/6.5/twitch-platform-6.5-natives-osx.jar",
                        "sha1": "5f9d1ee26257b3a33f0ca06fed335ef462af659f",
                        "size": 455359,
                        "url": "https://libraries.minecraft.net/tv/twitch/twitch-platform/6.5/twitch-platform-6.5-natives-osx.jar"
                    },
                    "natives-windows-32": {
                        "path": "tv/twitch/twitch-platform/6.5/twitch-platform-6.5-natives-windows-32.jar",
                        "sha1": "206c4ccaecdbcfd2a1631150c69a97bbc9c20c11",
                        "size": 474225,
                        "url": "https://libraries.minecraft.net/tv/twitch/twitch-platform/6.5/twitch-platform-6.5-natives-windows-32.jar"
                    },
                    "natives-windows-64": {
                        "path": "tv/twitch/twitch-platform/6.5/twitch-platform-6.5-natives-windows-64.jar",
                        "sha1": "9fdd0fd5aed0817063dcf95b69349a171f447ebd",
                        "size": 580098,
                        "url": "https://libraries.minecraft.net/tv/twitch/twitch-platform/6.5/twitch-platform-6.5-natives-windows-64.jar"
                    }
                }
            }
In this piece of manifest of Minecraft 1.8.9, we can see that there is three categories of downloads.
natives-osx, natives-windows-32 and natives-windows-64.
But the problem is: the launcher doesn't respects the platform, and choose to download natives-windows-32 instead of natives-windows-64.
 
I hope I have correctly answered your request.
Have a nice day.

Hello,

Can you browse to the folder where the Minecraft Launcher is installed,

Then right click on MinecraftLauncher.exe and properties.

Then go to the Compatibility tab,

Check if "Execute this program with compatibility mode" is checked.

If no, then reply,

If yes, uncheck that.

Have a nice end of day.