what a great support forum.
yeah of course, Slic3r, Cura, all Simplify3D versions except 4.1.1 are wrong. Even Mesh Mixer is wrong. This model has been checked with multiple mesh fixing apps and slicers, none of them have found any problem except S3D version 4.1.1. Version 4.0.1 is fine
Feel free to play with your crystal balls, enjoy
or consider proving your BS you are tying to tell. for me it's a bug of current version of S3D and I rolled back
no offense, but what you are trying to tell is ridiculous.