The problem is in admin->catalog->products->edit->links. When you press in a box(e.x. Manufacturer) and before the dropdown list opened you press in another box(e.x. Categories) then both of the dropdown list will opened and stayed opened until you press in the same boxes and wait.
*the problem exist in demo also if you are quick enough https://demo.opencart.com/admin/
Is there any fix for this? I attach a photo with the problem. The store is in Greek language.
Thanks a lot.
