2019 27" iMac
2TB Fusion Drive
3.7 GHz Intel Core i5
32 GB 2667 MHz DDR4
Radeon Pro 580X 8 GB
Running OS 13.1
Premiere Pro 2022
I have created my own lower third graphics in a sub-sequence which is full-frame. Then I put the sub-sequence onto the main sequence, crop the borders down and re-size and place it where it needs to be. In playback, it will usually show a half-frame of black in the frame immediately preceding the graphic dissolving in, but of course when I jog through that section, the half-frame of black is not there. And if I play it back again, usually there is no black frame. But after export, there it is, a half-frame of black preceding the dissolve-in of the lower third. I've tried creating the graphic different ways, and still get that half-frame of black. My next course of action will be to export each graphic with the alpha channel, and try inserting the graphics that way. But I shouldn't have to! This is infuriating! Please help!