I've tested v-0.1.
It work correct as You say, only on searchable list.
So, my answers:
1.I think is ok to continue on this tread wile we remain focused on this subject; if we break the line the moderator will let us know.
1.1. This or next could be on Developers.
2.I'm on Debian "buster"+KDE desktop.
3.I usually use SH3D the installer version with their java (8).
4 For this tests I use the personalized installation (furniture, plugins, texture) but also the standard installation without furniture,texture and other plugins except Your. It work!
Now bake to critics:
1.About Calculate perimeter is deactivated (it don't work) but appear active under Tools wile Re-group pieces are grayed. If we don't have a option to activate/deactivate is pointless to have a entry.
2.I need a bather organize the furniture to find them more quickly from first view without use of search especially when I don't know exactly what I want and also to gain space for drawing.
2.1.Please explain me which are the purpose of second frame?