I don’t know, I tried FreeCAD a few months ago and it was buggy as hell. I did some really basic extrusions and distance constraints. But ended up with non-perpendicular entities despite not constructing it like this.
I assure you that my 3d prints look like what I designed them.
I've been using FreeCAD for around 5 years no, and I can't ever recall running into such a problem, ever. I first started learning it during version 0.19 at the end of 2020 after years with solidworks and onshape. The user experience just sucked royally, it's far better today than back then.