Submitted by csanuragjain, also found by KIntern
canExecMatchOrder is having an incorrect check which makes a valid order as invalid. 
doItemsIntersect function is also checked on sell.nfts, buy.nfts which is incorrect. 
doItemsIntersect should only be checked in reference to constructedNfts.
Remove doItemsIntersect(sell.nfts, buy.nfts) from InfinityOrderBookComplication.sol#L140
nneverlander (Infinity) confirmed and resolved:
HardlyDifficult (judge) decreased severity to Medium and commented:
