Hello,
Thanks for the link. I’ll try.
No it did not change the core plugin files but everything started to go weird when I activated Autoptimize & W3 Total Cache. I as an admin can see the website perfectly but since we’re on testing mode, this “bug” is appearing. The “Menu Dropdown Ajax Loading” is already disabled, the bug I showed in screenshot with the menu only appears on pages where the JS errors are happening… And I can’t figure out why it’s working on some products but not on others…