The video playback window freeze when control from xbox360 joystick #219

I execute in one console: roslaunch bebop_tools bebop_nodelet_iv.launch
The image-raw window appears and the video playback works fine.
Then I execute in another console: roslaunch bebop_tools joy_teleop.launch
And use my joystick to control my Bebop2. The video playback window freezes and no clear error log found. But the joystick control is still live.

Is this an known bug?

System : Ubuntu 16.04 + kinetic + latest bebop_autonomy