Question on ebb n flow - knockdown

Was wondering if this is how it's suppose to work or it's a bug but never got fixed? I've noticed, and this is even before the update, that sp3 does not turn off protection from ebb n flow knockdown.
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Comments
They decide which is which, what they want, When they want, Where they want.
Yes it’s a paradox for sp3 to do not count as a knockdown
It seems like they got bored to code it as such.
On others it doesn't
It would be nice if it were consistent 🤷♂️