Grey bar appears when installed plank dock
I installed Ubuntu 16.04 and installed XFCE desktop environment right away. And then installed numix theme and icon pack. Then I installed plank. After installation a grey bar appears. When plank is closed it dissappears.
Here's an image:
Solution 1:
Finally, I figured out the answer for my own question.
Steps:
- Open "Window Manager Tweaks" --> "Compositor" tab
- Uncheck "Show shadows under dock windows"
(I'm using XFCE desktop environment.)