Can't properly move multiple parts

[riain43]

I've noticed that when I try to highlight multiple parts, then move them from one Category to another, the interface shows that it's registered multiple items to be moved, but on releasing the mouse, only one item gets transferred.

[Drachenkaetzchen]

I believe the issue is now fixed. Can you try on the demo system in about one hour to confirm that it's fixed?

[riain43]

Thanks for that, it seems to be working on demo site. I'll paste the new code into my installation and test there, too.