Submitted by Lambda
royaltyInfo, getRoyalties, or getFeeRecipients may return address(0) as the recipient address. While the value 0 is correctly handled for the royalties itself, it is not for the address. In such a case, the ETH amount will be sent to address(0), i.e. it is burned and lost.
In your logic for determining the recipients, treat address(0) as if no recipient was returned such that the other priorities / methods take over.
HardlyDifficult (Foundation) confirmed, but disagreed with severity and commented:
HickupHH3 (judge) decreased severity to Medium and commented:
