getSignaturesForAddress not returning expected transactions

[fafrd]

I'm trying to track transfer of the USDY token, A1KLoBrKBde8Ty9qtNQUtq3C2ortoC3u7twggz7sEto6. The getSignaturesForAddress API is not returning all the results I expect.

For example, this transaction shows up in getSignaturesForAddress:
3Ho6c6W4CyidzBaGZ9jYnvJZr4uXkWMk88ZDvN4WZd8difKBHgafjn6DNqJ6uW1pNfVBgnMUcmM19F32Dqos6tnA

But some transactions do not show, such as this one:
5jZYVxqLZkaff6G5fYrrbTvTNtPySqRsr5xG6PXRjU9YQrV72mrzF1txNm9GHr3NbjjEswSaqfmzNAVm4yHXqxBa

They're both version 0 transactions. Both transactions reference the signer's Token Account for USDY in the accountKeys list. As far as I can tell, the main difference here is that the first transaction references the USDY token in the Address Lookup Table, but the second does not. When calling getTransaction, I clearly see the USDY token shown in preTokenBalances and postTokenBalances for both txns.

Why might getSignaturesForAddress not show the second txn here, when it clearly interacts with the specified address? Is this a bug?

[github-actions]

This repository is no longer in use. Please re-open this issue in the agave repo: https://github.com/anza-xyz/agave