[MCL-15611] If minecraft crashes quickly the game output will be empty

The bug

If Minecraft crashes quickly after starting, the game output will be empty.

Steps to reproduce

Add -javaagent:missing to the JVM arguments
Launch an already used installation of Minecraft

Expected result

Minecraft fails to launch and the game output contains something like

22:25:28.024Using default game log configuration client-1.12.xml (outputs XML)22:25:28.260Error: Could not find or load main class "-javaagent:missing"
22:25:28.261Process crashed with exit code 1

Actual result:

Minecraft fails to launch, but game output only shows "Waiting for log output..."

Workarounds

If you cause something to be download (for instance, by deleting the relevant folder in .minecraft/versions) then the log will show the output.

The launcher_log.txt file will still contain the game output.

Comments 4

[Mod] markderickson 2020-11-13T04:28:38Z

Can confirm in 2.1.17783.

[Mod] markderickson 2020-11-30T01:52:08Z

Can confirm for 2.2.740.

[MCQA] Zgajak 2022-01-28T10:50:24Z

Hi there!
Could you answer few questions regarding this issue, it will help with the investigation:

Does this issue still occurs to you on newest version of Launcher?
Have you tried to install Launcher from the minecraft.net website?

This ticket will automatically reopen when you reply.

[Mod] markderickson 2022-01-28T11:12:57Z

Yes, this is still an issue in 2.2.8909 (macOS)! And yes, this is installed from https://www.minecraft.net.