I'm using Premiere Pro 2023 (23.1.10 Build 86) on my MacBook M1 Pro 2021 (Ventura 13.2).
When exporting a video (in .mp4 .H264, 3840x2160, CBR 40) I like to add a black frame at the very begining (because some video player or sites show the first frame, and I'd prefer to keep it blank for preview reasons).
When I export sequence with my IN/OUT points, I would export the black frame as my first frame.
Then it wouldn't work anymore, it would ignore the first black frame and skip to the video, so I would CMD+A my whole sequence and slide everything right 1 frame, to create 2 black frames in the begining, and that would work too.
But now when exporting, with the same settings and the IN point before those 2 black frames, Premiere still ignores those 2 black frames and skips straight to the first clip in the exported video.
A workaround would be to add a black video in the begining, but that's a bandaid solution.