There are two kinds of research scrolls. The kind I'm used to are one-shot deals. During the Zeal of Zenithar event, I received research scrolls that said they had a cooldown timer of 20 hours. (Apparently these are for sale from Rolis Hlaalu before but I never noticed the difference.)
The first time I used the cooldown-type scroll, it subtracted the 1 day from the character's appropriate research times, then the inventory icon grayed out and the spinning cooldown timer began. The next day when I used the same cooldown scroll again, it reduced my timers by one day, but then disappeared entirely like a normal scroll, no cooldown. I used a couple of others at the same time, and they gave me the research time reduction, but then vanished from my backpack. I've got a couple of others - I'm afraid to use them in case it's a bug.
How do the scrolls with cooldown timers work? Is it supposed to be a persistent item that stays in my backpack but they're currently glitched? If they disappear after one use, what does the "cooldown" thing mean?
Thanks!
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