- Shift selecting multiple objects highlights them in blue and enables control-clicking to de-select single objects.
- Using "select hierarchy" to do the same does not highlight them in blue, and does not enable control-clicking to de-select single objects (or the root).
Since viewport and outliner selection is now finally unified, so should the other various selection options also be.
The current behavior feels like a consistency break in the user experience.
Tested in both 2.81 beta and 2.82 alpha.