Using Windows 10
In Evoker specialization, I reset my perk points and found I was able to increase perks past my limit (past number of unspent points) for some reason. This ends up giving me negative unspent perk points.
I haven’t explicitly tested with any other class but I’ve accidentally tried increasing perks in other classes and it never let me past my limit.
Note that the bug only works with 1 point perks. I’ve tried every other perk. It only works with 1 point perks.
I can’t tell whether those perks (which turned my unspent points negative) actually work. I don’t think so though.