Slicing bug(?). Orca closing/bridging holes.

[xxxWhatzitTooya]

I don't have close holes on, enabled and disabled every settings combination I could think of to no avail.
Creality Slicer and Cura slice it like expected.
The printer is a K1 Max with a 0.6 nozzle and I tried with Orca Slicer 1.9,1 and 2.0.0-rc and different layer widths between 0.4 and 0.75.

Sliced with Orca Slicer 2.0.0-rc.

I also used a portable version in a sandbox so every setting was stock and still got this issue.
Edit: The model I use is this one.

[4eIIIuP]

Try to fix the model using the right mouse button on the model - > "Fix the model"

[mauledbyjesus]

Just ran into this. "Make overhangs printable" was the culprit in my case.