Warding

So I really enjoy the mechanic of being able to drop a trinket while recalling. Pretty much whenever I am recalling and sitting on 2 trinks I drop one for warding efficiency's sake.

So why doesn't this work with sightstone? It is the same as a trinket and because sightstone is refilled after recalling it makes sense to drop a ward before going back. However unlike trinket dropping sightstone wards (I think pinks too) interrupts recalling.

Kind of annoying, especially since as someone who buys sighstone a lot I instinctively mentally swap my warding button on buying one. So I am constantly recalling and wanting to drop a trinket ward but I don't have one so I use sighstone which interrupts my recall.