Strategic UseSpell Consumables (Blight Scroll and Recall Scroll) will NOT disappear when used for the 2nd time from either the Loot Screen pop-up (Right after a battle or when looting a Goodie Hut) or when used from the Strategic Hotkeys Screen (which generally opens the Yes/No pop-up). In the case of the Blight Scroll you can't possibly get a 2nd version in Vanilla LH so I suppose it's not really a problem, but it's quite possible to get two Recall Scrolls.
The only way to prevent this from happening is to use these Consumables from the character Equipment Screen through the "USE" button (which will consume them).
This also happens w/ some Mods Consumables, so there is more at stake than just a single item.
This is also the second issue linked to the pop up loot screen (The other one being said pop up USE button bypasses perk restrictions).
Finally, I don't believe the AI uses Strategic UseSpell Consumables (and not just the Vanilla LH ones, but also assorted Mods ones).
XtraDeconstruct an LH Mod by Primal