Did they change the timeline-layer controls?
I don't know if I'm tripping but 6 months ago I did a video and I remember the timeline was showing all layers like you would see it in Premiere or any other video editor, but now is just one single timeline to edit all layers. Let's say you want to make a longer duration of an element in the middle of the video, you gonna have to displace all files layers one by one where as if you could see all layers you would just stretch the layers selected.

