When you have a 12’000 users infrastructure, you are sure that the any Lync client issue will be detected.
On this case someone notice a glitch with the “Skype for Business skin” only. After some testing we pinpoint the issue:
- You receive an PSTN call;
- When you start using another desktop application the call monitor will switch to the miniature version and…it flashes from time to time!
The issue was reported to Microsoft 2 weeks ago.
Although is not documented or confirmed by technical support, it seems that the security update for Microsoft Lync 2013 (Skype for Business): September 8, 2015 solved the issue.