Application gets very visually buggy
It works fine but going over any element of the UI just makes it kind of fall apart?
Examples below

Could I know what Java version you're running via java --version in command prompt? I'm unable to replicate this on my machine.
Tried with both Java 17
and Java 8

Same result, although it doesnt seem to happen to any of my friends, even though they're using the same Java as me.
The only thing I could find similar to this online is a weird, rare Direct3D bug.
You can try either updating your Windows / GPU drivers, or launch JackboxDrawer from command prompt as follows: java -jar JackboxDrawer-1.6.1.jar -Dsun.java2d.d3d=false.
(You open the command prompt in the folder with the JackboxDrawer jar, just right click > Open with Windows Terminal (assuming Windows 11)
GPU drivers are already up to date and the java argument didn't fix anything, sadly.