I having the same issue when the problem is tried with Rust, like I mentioned in my own post. Interestingly, when I tried the same test with Python, the exact same test case expects False.

I guess there is a misunderstanding. The return value with those two arrays should be false, like you pointed out. But the test in the Kata expects true, which is incorrect.

Looks like the one of the tests is not correct, and it fails incorrectly. I wonder how others passed the tests.
The test in question is this:

a = [121, 144, 19, 161, 19, 144, 19, 11]

b = [121, 14641, 20736, 36100, 25921, 361, 20736, 361]

Here the element 36100 in b has no matching squared rooted value, 190, in a, so the return of the comp function should be false. But the test seems to expect true.