Preview Vertecies disapear as soon as i paint in Mesh painting (colors mode) 5-2EA

Hey there, I have a very frustrating bug and essentialy every time I paint a stroke all the previewed vertecies disappear so only the outer circle is visible. As soon as they disapear I cant paint on the mesh anymore. Or in other words if I try to paint I’m no affecting the texture to change. This has to be a bug by the engine but I cant figure out why. Please help me if you know.

In this video you can see the bug.