I have a symmetrical object, the base of a column, and when I attempt to bevel the four corners of this object, each corner bevels by a different amount.
When I rotate the mesh about the z axis, the same edges continue to be beveled by the same inconsistent amount, so this difference has to be coming from the mesh somehow.
I can to some degree ameliorate the problem by deleting all but one of these edges and recreating the mesh by extruding and rotating by 90 degrees about the origin a few times. This greatly reduces the unevenness of the bevel, but not entirely.
Is the mesh just imperceptibly inaccurate, and if that's the case, why does such a small inaccuracy lead to such a large disparity in the bevel size?