Unity3D for Linux (2018.3.0f2 Personal, Ubuntu mate 16.04), when importing an asset, sets the pivot point only to the median position. The 3D model is made in Blender, it has a complex parent-child structure. The total number of polygons is ~ 20 thousand. The reference point is set at the bottom of the model. Exported to .fbx and .obj.
With a similar import into Unity3D for Windows (2018.3.1f1 Personal, Windows 10) - everything is fine. The reference point at the bottom of the model.
All three import models of the model (.blend, .fbx, .obj) give the same result. Another 3D model behaves similarly.
If you export a project (.unitypackage) to the Windows version with this object, then when you import the entire project to the Linux version, it also changes the fixed point.
How can this be fixed?
I would be grateful for any ideas.