Operating system: Mac OS MoJave
Graphics card: Radeon Pro 560X 4 GB
When using blender 3d on a mac laptop, with a secondary monitor plugged in, I often use my HDMI switch to swap to and from my laptop to my PC. When I go to my PC, then back to my laptop, blender has a flashing strobing red area around my viewport. And also I cannot click into the area of blender, since my mouse is off focus. (can't click the actions in the dialog box to quit blender)
Exact steps for others to reproduce the error
- Open Blender 3D on mac, using it on a secondary monitor connected on a HDMI switch.
- Switch to another computer using the hdmi switch.
- Switch back to mac os using the hdml switch.
- Open Blender 3d.
- flashing red appears.
Based on the default startup or an attached .blend file (as simple as possible).