Consider the following scenario:
- You set the Windows theme as High Contrast Black or High Contrast White on a computer that's running Windows 10 or Windows 8.1 operating system.
- You set the Screen Resolution as 1024 x 768.
- You create a meeting by selecting the Meet Now menu and then select Open participant list>Participant Actions in Microsoft Lync 2013 (Microsoft Skype for Business).
- You hover your mouse pointer on one of the action options in the Participant Actions window, and then move the mouse pointer away.