[SDPhantom]

To isolate the adjustment to only when the name is showing, we'll just semi-recreate the original function managing the buff container.

hooksecurefunc(NameplateBuffContainerMixin,"UpdateAnchor",function(self)
    local parent=self:GetParent();
    local unit=parent.unit;
 
    if unit and ShouldShowName(parent) then
--      Replicate the calculation of the original function
        local offset=self:GetBaseYOffset()+((unit and UnitIsUnit(unit,"target")) and self:GetTargetYOffset() or 0);
        self:SetPoint("BOTTOM",parent,"TOP",0,offset);--    Apply offset here
    end--   We'll leave the false side of this alone to preserve the original anchor in that case
end);