Blender 2.83 support but wrong results with 'external' objects

[sfrsfrsfr]

hi,

i've adapted the Blender plugin to work with 2.83. It works fine when i use objects from the sample Blender file (e.g. Fence Object) but gives wrong results (orientation/angle of resulting fence) when i import other objects.

I'd appreciate any help/suggestions. I might just miss a simple blender setting/option.

EDIT: i should probably show the 'wrong results', so i posted images here

The plugin (working, but not polished for release) is availabe here

EDIT 2: found the problem:

the imported object had this 90 degree rotation set. All that's needed is to 'Apply' it (Object->Apply->Rotation) before running the add-on.