Hosted Applications Service (SIMS) Opens in a small window and cannot be resized.
Some users have reported that Hosted Applications Service (SIMS) / Terminal Server session can sometimes open up in a small window that cannot be resized – this seems to mainly affect users on OS X / Apple platforms.
The Remote Desktop Program which Hosted Applications opens in can sometimes default to smaller screen sizes. EG 800×600
instead of going full screen.
To resolve the issue, you can right click the icon on the Dock, click remote desktop, click options, display tab then drag the slider on display configuration all the way to the right so that it says full-screen.
This can take a couple of times to take effect.