Hi, I can't see it in preview and/or have managed to edit out what is visible but it is there in exporting.
Source video is 4K, export setting is YouTube Vertical video 9:16
I use a MAC Pro - not sure how to look up if driver is current, but I have all settings current and at latest version.
Also, my screen does not show menu - I get save project file as...is that ok?
I'll send the link privately.
Apologies, I'm not very tech savvy..