Interesting case, I did not think about this case when doing the new support material. It is clearly a problem for break-away support in some cases.
Note, the old method was broken in many ways, many ways that do not impact you. But it has quite some issues.
While there have been complains on the support material (as with every change) this is the first time someone makes a real case. So I'm planning to do something about it. I might be adding an option for the "wavy walls" support. As cutting the concave polygon into multiple convex polygons sounds easy but is difficult to do for all cases in a good way.
Note, the new support material is awesome with water-soluble support material.
Finally, most reprap parts are designed so they are printable without support material. I would rotate the X-END-MOTOR by 90 degs so it's flat on the biggest area. Bridges should be able to take care of all the overhangs then for both objects.