Earlier versions of DeoVR had a semi-transparent background to the playback controls panel which meant you could see the video playing while you were scrubbing through it.
This changed a while back, the panel is now completely opaque which makes it difficult to see where you are when scrubbing, particularly on 2D video where the majority of the image is hidden by the control panel. You can move the control panel out of the way but then you can't look at the control panel and the video at the same time, and you also need to keep moving the panel out of the way after every view reset.
Could you add a slider for control panel opacity to the settings please? Either that or a toggle switch between full opacity and the semi-transparency you had before. It doesn't need to be fully transparent, just enough so you can see the video behind it.