I miss one feature of the old properties dialog. When I select more than one item item in the old dialog and choose edit from context menu, I can edit them all at once in a nice grid.
In the new dialog I have no menu entry edit in the context menu when selecting more than one item. This entry is only available when only one item is selected.

This command is not available when you open the Properties dialog for a single track.

For multiple tracks, the ability to select multiple fields and to edit them in a grid (screenshot) is still there.

No bug, just a misconception.

You're right. I didn't realize that there is difference between editing one track and editing multiple tracks, because I'm normally editing more than one track.