Should be fixed now for chrome / firefox. Edge is still having some WebGl issues im trying to figure out. We are using MatterJS for the physics engine, which seems to have some issues on monitors with different refresh rates. The issue was caused by the rendering system not syncing up with the physics system correctly. Neither of us caught that bug because we are using monitors with > 144hz. It was an odd issue.
Works indeed, nice! Didn't really play it thoroughly yet, only checked if it works, but some early remarks:
Looks good, nice concept! It does feel a bit sluggish, especially waiting until the ball came to a full stop.
I got my ball behind the horizontally moving walls, making it impossible to escape. It takes too long for the ball to come to a full stop, so the wall hits the ball again before I'm able to hit it, I don't think it can recover from being trapped.
What could help with both points is to be able to hit the ball while it's still moving.