There are a few issues that have been brought up. Most notibly, if the game is transitioning and you close the window or tab out, it will crash.
This is because the game is set to recognize your screen resolution and adjust itself to that. But also due to this, sometimes the game can be quite zoomed out. Anyone from DEMO 1 might have notice the Pixel tearing happening during gameplay. We aimed to fix this, but seemingly in a roundabout way. We are continuing to work on fixing these issues. Hope it doesn't effect your play experience too much