This sounds like expected behavior to me. My guess is that the Bridge is configured to allow for layout control using FECC and it is also setup to pass FECC for camera control. These settings can both operate at the same time. To read how this works see this guide on page 49 http://www.cisco.com/c/dam/en/us/td/docs/telepresence/infrastructure/mcu/admin_guide/Cisco_TelePresence_MCU_4-4_Product_administration_guide.pdf
Specifically it states that "When one control mechanism can control either the layout or the far end camera, then that mechanism will always control the layout until "Zoom in" (FECC mechanism) or '1' (DTMF mechanism) is pressed. The control mechanism then switches over to control the camera"
Hope that helps!
-Chad