Strange red glowing issues in viewport when painting landscape materials

I’ve had this problem for a few versions now, entering immersive mode seems to remove the issue, until I start painting again - then eventually it comes back.

Anyone know how to fix this?


I have the same problem, but for me it appears after stopping the simulation. It doesn’t happen every time, only sometimes.

Any solutions or known causes for this? I have a Radeon R9 380 in the machine that is experiencing this issue.