Linux, 1080 GT
Broken: 2.80 bb52ef4ee9b
Short description of error
Light intensity/colour changes are only reflected in rendering viewports as long as they're in the main window.
Detaching a viewport makes it ignore this kind of changes to any light, including the World.
Changing light type or transformation seems to be no problem.
Exact steps for others to reproduce the error
- Detach a viewport to a sub-window.
- Change the intensity, colour, or texture of any light, including the World.