Cubase Video Import Bug

I’m experiencing this: I import the video, one that’s 24 fps for example. The burned in timecode shows up at the very beginning of the video as 01:00:00:00, as it should. The video is placed at the start of the project on bar 1. However, when I go to setup and add an offset of say, 1 bar, to have the project start at bar 0 and the video starts at bar 1, there is now some black added to the beginning of the video, like a second of so, before the timecode appears and runs. This is not the case when I play the video in Quicktime player so somethings happening in Cubase. The project is set at 24fps and the video is a .mov. This also happens with h264 videos too.