Caveat emptor: tracks tasks/issues related to in-track transitions between two adjacent clips within the same timeline track. For the old meaning of "transitions" in the sense of compositing two tracks please see T7080 "Compositing" instead.
I was under the impression that we wanted to differentiate between compositing and transitions in the future ... albeit the volume transition then would belong into the (audio) compositing category...? Argh! :)