I find it annoying as well, when in some cases I can right click and issue to refuel here and in other instances I can't. Also I don't know why I can't wich is so frustrating.
Well, there's one user that has already reported a usability problem WRT the context sensitive zoom. Personally, it took me several half-games to figure it out.
I would get rid of the icons in zoomed in mode and just provide the full (most options) right click menu everywhere, no matter the zoom.
By the way, you're probably the nicest, most polite, hardworking, and helpful moderator on the internet. Well done.