The sources of entropy for the token hash randomness are greatly reduced.
The implementation expects to consider multiple words (in case it is configured that way), AND the token id for randomness, but it is only using the first word.
This affects both RandomizerRNG and RandomizerVRF contracts.
Notice how fulfillRandomWords() calculates the token hash as bytes32(abi.encodePacked(_randomWords,requestToToken[_requestId])):
The problem is that bytes32() is only taking the left-most 32 bytes of the abi encoded data, which correspond in this case to the first word in the _randomWords array.
Subsequent words (in the case of RandomizerVRF) and the tokenId (requestToToken[_requestId]) will not be considered as a source of entropy for the hash.
In fact, it will set the token hash with the same value as the first fulfilled word.
Calculate the keccak256 hash of the packed data. This way the whole pack will be considered for the hash:
