Items not visible op paperspace

[RaNoPlus]

Hi,
I have a question about the object which are visible (layer on etc) in model space but not in paper space (lucht). I send you both screen shots to see the difference.
If you look in the attached drawing (dwg) you see paper space (Lucht) with Legend (legenda) where some items are missing (purple lines indicating air ducts or the circles with arrows indicating air ducts going up or down.
In model space are these object visible. I drew there also new lines above the existing lines of "Luchtkanaal toevoer" and "Luchtkanaal Afvoer". As you can see these lines are visible in paper space (lucht) but not the existing lines. What do I do wrong? Everything is "on" and visible. Can you help me please? Thank you in advance for your help.
Regards Radek
MacOS Catalina, Qcad 3.24.3.0 (3.24.3)

[andrew]

These entities have Z coordinates (3D).

This seems to be fixed in the current snapshot release (3.24.3.9).

See also:
https://www.qcad.org/rsforum/viewtopic.php?f=33&t=7351

[RaNoPlus]

So if I download the snap shot release it would work?
Based on this. I also tried it in version 3.23.0.0 (3.23.0) and it works just fine there.

[andrew]

So if I download the snap shot release it would work?

Yes.