WPCentral reports that there may be a new problem with Twitter contract integration in Windows Phone 7.5 Mango.
It seems twitter contacts are not showing up in the People hub, irrespective of the filter setting. Handsets running the RTM build of Mango does not seem to be affected. No solution has popped up so far, but a work-around appears to be to remove the twitter account, reboot and add it back again.
Are any of our readers affected by this issue? Let us know below.