Submitted by Trust
Tiers in Juicebox can be deactivated using the adjustTiers() function. It makes sense that reserve tokens may be minted in deactivated tiers, in order to be consistent with already minted tokens. However, the code allows the first reserve token to be minted in a deactivated tier, even though there was no previous minting of that tier.
Using the rounding mechanism is not valid when the tier has been deactivated, since we know there wont be any minting of this tier.
The reserve beneficiary receives an unfair NFT which may be used to withdraw tokens using the redemption mechanism.
If Juicebox intends to use rounding functionality, pass an argument isDeactivated which, if true, deactivated the rounding logic.
mejango (Juicebox DAO) acknowledged 
Picodes (judge) commented:
cccz (warden) commented:
Picodes (judge) commented:
Picodes (judge) commented:
