I just upgraded to Windows 10 from Windows 8.1 using the upgrade in place provided by Microsoft. Overall the experience has been fantastic, but the Remote Desktop "Full Screen" mode appears to have a bug in it, unless someone can help me fix it. In essence, when "Full Screen" AND you use all of your monitors is used, when the cursor is moved to the very bottom of your smaller resolution monitor the whole session "scrolls" upwards showing the taskbar for the underlying OS (Win 10.) My laptop monitor is 1600x900 and my regular monitor is 2560x1080 or 1680x1050 (one at work, other at home.)
EDIT: It's not destination OS depending. Does the same whether I'm connecting to Windows 7, 8 or 10.
Attached is an example of what it looks like. Any ideas?