Bug AC21 - offset all edges

[felcunha]

Hello all,
when I try to offset all edges of two connected walls in 3d, only one of them will be duplicated.
It works well in plan but not in 3d.
Did you experience that ? I'm in AC21 4022 FRA.
Thanks

[runxel]

Can confirm this behaviour.
20 build 6005

At the beginning the first copy worked before failing, then I enabled (and disabled) autogroup. Now it already fails on the first offset.

[Laszlo Nagy]

Funny, now I can reproduce it in AC21 b5021. So there is definitely something going on here.