[LudiusMaximus]

All right, I built my own drop down list, hoping that I can use this without spreading taint.

But it turns out that even this miminal example spreads the taint:

local myDropdown = CreateFrame("Frame", "myDropdown", UIParent, "UIDropDownMenuTemplate")
myDropdown:SetPoint("TOP")
UIDropDownMenu_SetWidth(myDropdown, 130)
 
local function MyDropdown_Initialize()
 
  local info = UIDropDownMenu_CreateInfo()
  
  info.text = "test"
  info.value = 1
  UIDropDownMenu_AddButton(info)
 
  info.value = 2
  UIDropDownMenu_AddButton(info)
  
  info.value = 3
  UIDropDownMenu_AddButton(info)
  
  info.value = 4
  info.checked = true
  UIDropDownMenu_AddButton(info)
  
end
 
UIDropDownMenu_Initialize(myDropdown, MyDropdown_Initialize)

You get the error like this:

1. Go into combat.
2. Open the game menu (click the button, do not press ESC which would exit combat).
3. Click on "Interface".
4. Chose the "Accessibilty" tab of the "Interface" window.
5. Click my drop down menu at the top of the (UIParent) screen.
6. Click the "Cancel" button in the bottom right of the "Interface" window.

Is this bugged or am I doing anything wrong?