Borderless Minecraft Crashes when MultiMC Instance Launched

[swishkin]

The app (1.3.1) closes within a few seconds of launching my 1.17.1 instance in MultiMC, if "Automatic Borderless" is selected. I'd like for Borderless Minecraft to work automatically, but returning to manual mode prevents these crashes and allows successful borderless usage.

Is there anything I can provide (log, etc) to help debugging this?

[Mr-Technician]

That's a strange bug... If it provided some sort of crash report I would like to see it. @swishkin

[swishkin]

It closed without warning or any log/report that I saw; is there somewhere it'd put something like that?

[Mr-Technician]

I get a popup like this if I manually throw an exception:

Since you don't get one I'm wondering if an exception isn't actually being thrown, but I'm not sure why borderless minecraft would crash otherwise.

How does your MultiMC instance of Minecraft show up in the task manager?

[swishkin]

Yes, it shows up as shown below:

[Mr-Technician]

Can you expand the Java process? Sorry for all the steps, I should have asked for that before. 😅

[swishkin]

Here you go!

[cornerkey]

I Have exactly the same issue when automatic fullscreen is selected through multi mc

[cornerkey]

The path is different for multimc instances idk if that makes a difference

[Mr-Technician]

I'll need to install MultiMC and test with it so I can see what's going on...

I assume you don't get a crash report? @cornerkey

[cornerkey]

@Mr-Technician No i dont get a crash report it just straight up closes

[cornerkey]

it works if use normal launcher but i use multi mc because i speedrun and its easier to launch and maintain different instances

[Mr-Technician]

Ok, I will test with MultiMC if I get the chance. :)

[cornerkey]

ty u can ask me if u need assistance in any way

[Mr-Technician]

ty u can ask me if u need assistance in any way

If you're feeling adventurous you can download the source code, run borderless minecraft from there, and see if an error comes up. :)

That requires Visual Studio though.

[Mr-Technician]

I've tracked down the bug. MultiMC does something weird that causes Borderless Minecraft to detect a java process that no longer exists, which throws an exception. I've added code to prevent this but need to debug some other odd behavior with automatic borderless before releasing it.

[Mr-Technician]

The other auto borderless issues appear to be resolved. I will clean the changes up tomorrow and release an update to fix this issue. 🚀

[cornerkey]

Thank you so much you were extremely helpful and you responded so quick, im really impressed.

[swishkin]

I really appreciate you looking into this and debugging it! I've switched to GDLauncher, and while it doesn't crash, it seems like it doesn't automatically borderless either. :/