Drag rests like notes?

Hey guys,

MS 4 is fantastic, but one quirk I've noticed:
When a bar starts with a note or chord, you can drag it horizontally to add leading space (to add a chord symbol, Segno, text, etc.).
But try that with a leading rest, and it floats freely, leaving the rest of the bar unchanged.
In these screenshots, I've dragged the leading G to the right to add space for the chord symbol. But when I dragged the rest, only the rest moved—and its movement isn't even constrained horizontally, as the note's was:

In fact, rests behave this way, everywhere.
It can be "gotten around" by temporarily making the rest a note, dragging it, then restoring it. But is this intentional behaviour? Why? Thanks!