Symptoms
Assume that you open the Options dialog box (which is found on the main window in Microsoft Skype for Business 2015 (Lync 2013)), and then you select the IM (instant message) section of the dialog box. In this situation, some UI controls overlap visually.
Resolution
To fix this issue, install the December 6, 2016, update (KB3127976) for Skype for Business 2015 (Lync 2013).Note Lync 2013 was upgraded to Skype for Business in April 2015.
