I have no idea which of those are geese. I was half expecting the random tests to fail with a whole new bunch of geese names not covered in the description. Thankfully, not the case.

missing fixed tests for js

Scala translation

Enabled in this fork

Lua translation!

forked and approved

I found the discription a bit hard at first, but then I understood it.

Haskell translation

This exercise taught me a lot of other related functions, super useful.

It's not really that hard. Clear instructions:
You have a list of geese already made.
You just remove any item common in the geese list and the array to be filtered you get.
That's it?

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Using remove on lists while iterating through them with a for loop can cause parts of the list to be skipped, which is what's happening in your code.

Needs better instructions.

I wouldn't say it's an 8th-level kata