I noticed a bug in the taskbar (and in the start menu if you use StartisBack program)
The 2 lines when you idle the cursor to a icon from the taskbar keeps on there even if you move the cursor to another place
When I open a program (i.e Explorer) the lines dissapear but keeps appearing when I exit the program and do the aforementioned steps.
Somehow I can't make a screenshot of the problem, the lines dissapear when I take a screenshot...
The bug is happening in Windows 8.1 64-bits