Fountain with cherub

[miriya]

I'm not sure if this is really a bug, but there may be something fishy going on with the fountain filled with green water next to the burned house.

Spoiler (hover to show)

If I cast the retrieve inanimate object spell, I get a message that says there's something I need but is probably attached.  I took this to mean the cherub's wings which I'd hoped to use for a spell ingredient.  When I use various inventory items on the fountain and cherub, I get no message at all.  I've been unable to retrieve the cherub's wings, and I'm not sure I actually can get them (or if I'm even supposed to be able to).  It took me quite a while before I realized I could take the wings from the angel in the cemetery instead. 

Could this issue be related to the problem of the sorcerer being unable to get the pond slime?  If I'm wrong about there being a use for the cherub's wings, then there should at least be some sort of message when using inventory items on the fountain.