BUG: "Buff 3 of your friends buildings" - pickup-able items count towards total!

One of the daily quests I got was " Buff 3 of your friends buildings"
I went to a suitable island and, before buffing anything there, decided to highlight various pickup-able items on the map.
After the 3rd item I got the "Quest complete" message. :confused:
(I buffed the 3 buildings anyway).

I guess the pickup-able items have been miss-classed as buildings. This IMHO is very bad. The quest is for BUFFING not HUNTING. It means miserly players can save on buffs by hunting for things. Not in the spirit of the game as I see it.

BB: please fix
Everyone else: don't be a miser

they're called "collectibles", but other than that, this is the nature of highlighting, from a perspective of the game engine, it's "buffing".