When you apply a timeline changing effect the selection region now
changes length accordingly, but if you change the rate in the Track
Dropdown menu, the selection region does not change. 1.2.6
behaviour is the same. Is the best behaviour that the region should
change when changing rate via the dropdown? For example if you
reduce the rate this applies to all the track, but if you then apply an
effect, you need an extra step to apply that effect to all of the track.
If no comments, I will assume as a minor bug.