[Lybrial]

In this case self is the anchorFrame

Look what happens if I add some outputs to Detach function:

self.anchorFrame.Detach = function(self)
            print("Detach called");
 
            self:SetParent(UIParent);
            self:ClearAllPoints();
            self:SetPoint("CENTER", UIParent, "CENTER", 0, -150);
 
            print("attached to: " .. self:GetParent():GetName());
 
            LybrialAnchors:OnUpdate();
        end

output:

Detach called
attached to: NamePlate1

How does that make sense? I set parent to UIParent and he is still attached to NamePlate1