Knowledgebase:
RDS for MAC Bug?
Posted by Jane Hughes, Last modified by Jane Hughes on 07 December 2017 09:45 AM

https://social.technet.microsoft.com/Forums/ie/en-US/9544c723-6e82-4a0d-aeb8-0902c482fdf4/rds-for-mac-bug-automatically-resizing-a-window-and-moving-off-screen?forum=winRDc

All of a sudden RDC will take this pop up window and resize it automatically, slowly expanding the entire screen, then moving to the left.  Then it will disappear, assuming it got too big to fit on the screen.  Another even weirder thing is on another window it seems to snap to the top of the screen then moves to the left... After awhile it reappears on the other side of the screen still moving to the left.  I was able to replicate this on multiple Mac computers using OSX 10.10.5 and the latest Remote Desktop Client for mac. 

There is a new RDP app for iOS which may fix the window 'tracking' problem on an Apple Mac:

https://cloudblogs.microsoft.com/enterprisemobility/2017/11/28/new-remote-desktop-app-for-macos-available-in-the-app-store/?MC=Windows&MC=BusApps&MC=SysMagSof