[Fizzlemizz]

The ActionButtonTemplate is setting an absolute size for the NormalTexture rather than using SetPoint() relative to the frame.
Classic, #NoChanges

local x, t
 
x = CreateFrame("Button", "LSSettings" .. "StanceIcon0x", UIParent, "ActionButtonTemplate")
x:SetPoint("Topleft", 350, -200);
x:EnableMouse(false);
x:SetWidth(50);
x:SetHeight(50);
x:SetNormalTexture("Interface\\AddOns\\LunarSphere\\art\\mouse1")
t = x:GetNormalTexture()
t:SetSize(x:GetSize())
 
x = CreateFrame("Button", "LSSettings" .. "StanceIcon0y", UIParent, "ActionButtonTemplate")
x:SetPoint("Topleft", 350, -300);
x:SetWidth(24);
x:SetHeight(24);
x:EnableMouse(false);
x:SetNormalTexture("Interface\\AddOns\\LunarSphere\\art\\mouse1")
t = x:GetNormalTexture()
t:SetSize(x:GetSize())
 
x = CreateFrame("Button", "LSSettings" .. "StanceIcon0z", UIParent, "ActionButtonTemplate")
x:SetPoint("Topleft", 350, -400);
x:SetWidth(10);
x:SetHeight(10);
x:EnableMouse(false);
x:SetNormalTexture("Interface\\AddOns\\LunarSphere\\art\\mouse1")
t = x:GetNormalTexture()
t:SetSize(x:GetSize())