Been using it to ban OF spammers since the funtionality was added to the bot and it's always worked fairly well, but over the past few weeks/months it's missing loads of accounts.

Profiles with OF directly linked on their profile, consistently in recent comments, and linked indirectly through linktree or equivalents - all of which I believe are considered?

Is this a known issue?

Happy to provide examples across various subreddits if that'd be helpful.