VERY strange issue with Instagram

There's a strange bug I've been hitting lately on Instagram.
Certain mutual followers not showing up, or very far down the list.

Say there is an account @x that is followed by a close friend of mine (@y). I follow @y and @y follows me back. It doesn't matter if I follow @x or not.

Before, when I would open @x's page, I would see "Followed by @y, @z + 42 more". But that no longer happens. For some reason @y is not in this short list of mutual followers. Also, when I open the full list of…

VERY strange issue with Instagram