bug? on Zoom F3

[wOxxOm]

I often press F2 enlarge some small area then press F3 to return to previous zoom level. In Draw12 (and earlier) there was no problem.

In Draw X3 when I press F3 (after F2 on very small area) it doesn't return to previous zoom level but instead slightly reduces zoom level (in 2x increment when I need e.g. 8x back: from 5000% back to 500%).

Nevertheless if I use mouse right-click when in zoom tool there's no problem: zoom level correctly restores after magnification from 5000% to 500% in one click

BUG supposed.
solution is to write a macro and assign it to F3:

sub zoomOutBack
   activeWindow.activeView.ZoomOut
end sub

here the zoom levels works fine, the same of CD 12