Loss of selection when duplicating with alt-leftclick

there is some strange behavior when duplicating several nodes by alt-leftclicking them. clicking on a single node works as expected (same as ctrl+d), but when clicking on multiple selected nodes, the one that was clicked on becomes selected instead of the recently-duplicated ones.
not a huge issue, but irritating, especially when the new nodes go under the old ones. i should add that this happens even if i click-and-hold, ie. try to drag the new nodes away immediately. :)

i didn’t even know about that alt-leftclick feature :)

ioa…consider it an unsupported feature. i remember ages ago, when i implemented it i had quite some troubles getting it to work the way i wanted it to work. seems i just let it in there at one stage instead of commenting it out…