Operating system: macOS Mojave 10.14.1
Graphics card: Radeon Pro 560X 4096 MB
Broken: version: 2.80, date: 2018-12-03 23:39, hash: 1b6a394d862
Short description of error
Two red lines are visible in blender's UI. One near top and one bottom. These red lines appear only after entering Full Screen mode, and still persist even after exiting Full Screen mode.
I right clicked on the red line, and chose "Join Area" and received this error message.
"Global areas (Top Bar, Status Bar) do not support joining"
I don't know if that's a useful clue or not, I just wanted to share just in case it could help.
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).
- Open existing scene or new scene.
- Enter Full Screen.
- Should see one to two red horizontal lines.