Hi! There is problem with paint texture on terrain, I use 2019.2.0b3 with LWRP 6.7.1. If you set Texture Quality not equals to Full Res then paint texture tool will broke. It don’t paint, and also may freeze Editor for a long time(may be forever).
How to reproduce? Just create terrain, and create a two layers, try to paint it with Full Res in Texture Quality settings in Quality and it should work, after that change settings on another e.g: Half Res and try paint - you can see a problem.
Sorry for bad spelling, I searched this bug all day in my project it was hard, I’m tired