I just noticed that any changes made to products, while in product list view, is not getting saved. I get a message that changes were saved...no error message at all. I also noticed that when I do a bulk edit and try to apply changes to all items selected...the changes don't get applied. I can still save changes if i edit the product in product detailed view.
The only thing I can think of is that this started to happen after upgrading from 4.3.10 to 4.4.2. I also have an instance of our site in dev (on the same server) which is still in 4.3.10 and performing these steps work fine.
Any idea what is causing this? I already tried to disabling recently installed addons.