Sonar minimizes to Windowed mode when selecting instruments from Synth Rack

hey all, wondering if there a solution to this issue. When selecting an instrument (double-click on an existing instrument in the Synth Rack) Sonar minimizes to a windowed mode essentially pulling it out of full screen. This happens every time I select a plugin from the Synth Rack. The only work around is pinning the synth plug in.  Sonar stays in full-screen only when switching back and forth between pinned instruments.  
 
This wasn't an issue in previous builds. Is there a setting somewhere to prevent this from occurring. Very annoying. 
 
Thanks!