Just installed 2.0.2 through the guide at http://devdocs.magento.com/guides/v2.0/release-notes/tech_bull_201-upgrade.html
Whenever I go to CMS - Pages or CMS - Blocks it's not loading the current pages/blocks. The spinner just keeps loading. I can add a new page/block with the button, but whenever I try to save it, it also keeps spinning and saying Please wait...
Seems all options in the backend where not saving and stuck in the Please wait... loop
Did a full system/server restart, and looks like everything is working again.
Looks like I am getting the same problem too, however I'm on a shared hosting server, so I haven't got the option of a server restart!
It seems I can Add a Category but I can't Save any changes to the Store -> Configuration settings, the Save Config button just doesn't do anything.
I also have this problem after upgrading to 2.1.2, and rebooting the server doesn't fix it.
I also have the same problem any clues on how to fix it?
It just happened outta nowhere I have not changed anything and all other backend pages work fine.
Same issue here. No apparent reason to trigger it.
Has anyone found a fix for it yet?
I started looking into server problems regarding this issue and found out that PageSpeed for Nginx was causing this issue ( All minify, etc., options on magento2 are disabled ).
Disabling it solved my issue.
I wonder if I can replicate this issue with my exact server configuration on the cleanest magento 2.2.2 installation and PageSpeed for Nginx on, since I also have Magento 1.9 running on the server with no issues whatsoever regarding this particular module