When viewing a page in the new Vector skin the modules skins.vector.user and user are loaded at the same time. This is resulting in common.js being loaded twice.
QA
Login as admin
Add to User:Admin/common.js
console.log('admin.common.js');
Expected: I see the log once.
Actual: I see it twice
Visiting https://eu.wikipedia.org/w/load.php?lang=en&modules=skins.vector.user|user&skin=vector-2022&user=Jdlrobson&version=1uo6p&debug=true&only=scripts I should see Lankide:Jdlrobson/common.js only once
Actual: Seen twice