10.7.7 appears to have introduced an issue where the remote display no longer scales to full screen and is also only displayed on a single display when multiple displays are used. Screenshot fro...
gietal
Microsoft
MicrosoftThe fix is available on the latest beta client version 10.7.9 (build 2011). You can get it from aka.ms/rdmacbeta
Send us a screenshot of your display arrangement if you're still hitting the issue after trying with the latest build