The components are loaded with the size relative to the size of the media on the loaded file, while the media's length stay the same as before the load. That impact how the slider timeline is drawed and which time is displayed in the toolbar , for instance.
It happened a lot during the Inception analysis. Not quite sure how to reproduce. Try to use various combinantions of enter selecting, arrows selecting, and esc pressing to toggle focus between timeline and inspector.
Ir is very weird (and probably confusing to users) to see formal type and formal function listed as possible attributes when the media is a video. It is also possible, as a temporary fix, to hide those properties when a video is loaded.
Bubble: The obvious candidate is the AudioTimeliner-style bubble. It has the problem of not compkletely covering childrn units in some cases. That can probablye be fixed by adding a variable length straight segment to the base of such units. THe final result might look more like a trapezoid than a bubble