Curious behavior of custom pad creation through combining of shapes in 5.1.9 (possible bug)

[hwreverse]

Dear KiCAD Community,

When showing how to create a custom pad in the footprint editor (5.1.9. Windows 10) from a oval TH pad with an oval hole and a rectangular polygon (silkscreen), I get something extremely weird.
Here the source elements:

And here the result after combining bith elements to form a pad (as if Kicad tried shrooms )

So, dear colleagues, bug or feature ? (is there some explanation to it ?)

[eelik]

The explanation is that only rectangular or circular pads are accepted as the anchor pad, and (for some reason) KiCad automatically replaces an oval pad with a circular one. But even in a circular pad the hole can be oval and it’s not changed.