fastwagonsell not working with engines other than the first

[DaleStan]

What the subject line says.

Build a multiheaded train (at least 3 heads), and then <Ctrl-sell> any engine except the first and last engines.
That engine, and all wagons following it, will get sold, but any engines that follow it will not get sold.
This happens without any new graphics loaded (without even a newgrfw.cfg)

Even more interesting is what happens to articulated engines (this was tested with the USSet's K4): the engine gets sold, but the tender does not. Again, any engines following the <ctrl-sold> engine are also not sold. Selling an articulated engine normally (without <ctrl>) causes all parts to be sold correctly.

TTDPatchw a48
ttdpatch.cfg attached

[DaleStan]

Bump.
It still happens in a52.
Here's another cfg and two savegames. Try to fast-sell either the second or third engine of Train #1 (in the depot)
Either you're looking at the no-new-graphics game (TRP00, 1990), and the wagons sell, but the following engines don't, or you're looking at the USSet game (TRP01, 1921), in which the engine sells, but its tender does not.