Blank scrolls not doubling per buyout

[Isis]

Hello, I have noticed on a few different mage and scribe vendors, the amount is not doubled after each time. Say you buy 20 and next hour respawn should be 40. only about 2 vendors I found actually increase, the rest just reset back to 20 or 40, same npcs too, no ones killing them. Look into this pls jack?

[Jack]

Which NPCs are not doubling? Is it specific? Like scribes for example?

[Isis]

I noticed it to be the npc mage shop keepers

[Jack]

Could not reproduce this issue. Are you sure you weren't just too late in a restock period?

[Isis]

I might have been, though I was trying to check once every 60 mins.