Very Dark Unity Editor after switching to use DX12 in 6 Preview

Hi, since i switched to DX12, my entire UI has become very dark, i had to boost my brightness to max, but now everything is washed out, and white fonts and colors look gray instead. I’m using Unity 6 Preview 16f1. Occasionally I had some tabs normal white color and others grayed out, but now I’m back to everything is dark (washed out if i boost brightness beyond normal). How do I fix this?

Seems like setting Player → Use HDR Display Output is what causes this.