I am using a live camera feed with maximum delay (15s 1280x720@30fps). When I record from the live feed and I open the video for playback in a second window, the maximum delay is cut in half (7,5s 1280x720@30fps).
The slider and the text don't update and the delayed stream freezes (for 7,5s). This can be resolved by clicking inside the slider.
When closing the second (playback)window, the maximum delay goes to 15s again, but the video freezes again for 7,5s (buffering the feed of 7,5-15s).
My main issue lies in the fact that the maximum delay is cut in half, the GUI updating is not that important.
(If I find some more time to look into this issue, I will also post some log-files).