I made changes today in my common.js on frwiki.
I proceeded as usual, I save the changes, then I purge the cache of my browser (firefox on Linux) via Ctrl+Shift+R.
I do not know if this is a problem on my side, or if it concerns other people. In any case, this is the first time that it happens to me (I make regular changes on my common.js).
(sorry for my bad english)