Whenever I use Fs2Crew with my PMDG 747-400 whilst in "onboard Cockpit" captain view, it quickly goes into an outside view, specifically aiming at my aircraft engine. It happens every time when I pull up the main FS2Crew panel and press secondary. If I can do a screen recording of such, I will do so upon request for further inquiry. 

It sounds like a keyboard conflict.

Try re-assigning the keys used to open the FS2Crew panels to something different.

 

OMG, its been over a year since I've been replied to in regards to the post. I found out it was HOTCORNER that was the culprit.