--Pending Fix-- 8.0.31 Dual Monitor to Server 2012
Dual monitors in extend mode
RDP8 with rfx enabled
Second screen has a scrollable IE window open. When scrolling, the primary monitor is partway replicated onto the secondary. Can be temporarily resolved by minimizing/maximizing IE window. If you move the IE window to the primary then back to the secondary it maintains the partial replication, but it doesn't extend to the desktop or other windows.
Unfortunately, screenshots don't display it.