Some examples where matches are incorrect (will update when the bot is adjusted to correctly process these):
{JoJo no Kimyou na Bouken (2012)} (and pretty much every iteration trying to get to the 2012 version) fixed in 05dd2c74c4114f3e7b5579de0c2ed481c5d07ed8
{K-on}/{K-on!} fixed in 79836af8fe9ad00548324dabdd708e36367ae6a7
{FMA:B}
{Kara no Kyoukai} (gets Movie 4, where it should get Movie 1) maybe fixed in 79836af8fe9ad00548324dabdd708e36367ae6a7
{Fate/Zero} - anything with a slash in it will kill Anilist, in order to escape it just remove the slash entirely when searching fixed in 3e14bd37ec61213fb1a2827b472a2b9d6f97488d
{Re:Zero} - gets a side story won't change, use {ReZero}
{Big Order} - gets nothing
{Fate/stay night} - See F/Z fixed in 3e14bd37ec61213fb1a2827b472a2b9d6f97488d
{Gochuumon wa Usagi Desu ka??} - Should get the sequel, but it gets nothing instead. fixed
{Special A} - Anilist gets the wrong one fixed in 79836af8fe9ad00548324dabdd708e36367ae6a7
{Konosuba 2} - returns nothing fixed in 79836af8fe9ad00548324dabdd708e36367ae6a7
{Gosick} - returns nothing fixed in 79836af8fe9ad00548324dabdd708e36367ae6a7
Potential workflow:
string-similarity
rating.