Just put a portrait clip on the timeline, duplicated it & was going to stretch the one behind to do that portrait on a blurred landscape background type thing, there's many ways of doing this & i have plenty of plugins so not interested in 'a way to do it' but Size/Position/Rotation is being weird,
when i move the portrait behind you can't see it, but if i move the one in front, the behind one shows 🤷♂️🤯