Launcher window blank/black when using dedicated GPU

I have a dual GPU system (AMD/NVIDIA) running Linux Mint. When running in an On-Demand mode, my desktop allows me to run a program either on the default AMD GPU, or offload it to the much faster NVIDIA GPU. This used to work perfectly until today's update. Now, having the Minecraft Launcher offloaded to the NVIDIA GPU brings up a blank/black window. Without offloading, I can run it just fine, but it won't be running on my faster NVIDIA GPU, so I can't use more advanced shaders without bogging down the game.