It seems unlike vanilla quickbars , toolbars draw quality over count number .

Recreation - give yourself 100 or 1000 of any particular item with rare (or highter) quality (like 100 atomic bombs or 1000 electronic circuits) . Place it in vanilla quckbar and toolbar .
The one that in quickbar will draw it count on top of quality . While one that in toolbar will draw count under quality .

Factorio are 2.0.12 and Toolbars are 2.0.8 .

I went here to post about this too. I so love the addition of seeing number of items in logistic network when in remote view, but when the number of items is obscured by the quality icon it makes it a bit harder or impossible in certain cases.