Calendar mess with iOS 9 device

Hi all,

We have a multi-server installation running CentOS 6 x86_64 on 17 Zimbra servers of which 7 are mailbox servers.
We run Zimbra 8.0.8 OSE and ZeXtras 2.0.3 with Zal 1.8.4.

Steps to reproduce the problem:

1. stsimb invites gstag in a meeting tomorrow morning at 9:00 (random time and day in the future)
2. gstag views meeting in his iOS 9 device (iPhone model ME435GB/A, iOS 9.0 (13A344))
3. meeting in gstag's ZWC is messed-up -- displayed at $NOW (e.g 23:45 pm today, not tomorrow at 9:00) and multiple times ...
   Screenshot: ?dl=0

I have also captured a sample conversation with debugLogger -- I can mail it to you if you want me to.

Thanks,
Sotiris.