I have the same problem with the new version (Steam version 2018.2.2)
When a new project is created, the 2d view show my uv in the lower left corner(see picture 02), and the gray uv border moves like it has a weird parallax effect, when i zoom ,the pointer get stuck, and when i tried to paint, the pointer and the painted area are misaligned (see picture 01).
Things i tried (tested with diferent 3D models with the same results):
-Update and back to a previous nvidia driverversion. nothing of this work.
-Open a old project. The old project works ok(see picture 03).Then i create a new project, and the new projects works as intended(see picture 04).
-Open a old project and then open a saved(bugged) project, and the problem persist.
Please fix this bug. Thanks!