After successfully upgrading from Grav 1.7 to Grav 2.0, I noticed an annoying feature of version 2.0: page reloads while editing.
In version Grav v2.0.17, Admin v2.0.19 after 53 minutes after page creation all entered text of the page is cleared and "Save" button is inactive (grayed out). As far as I remember, in version 1.7, after a period of inactivity, I was redirected to the login page, and I clicked "back" and copy text to clipboard and paste it to the same article after the login. Now in version Grav 2 all content is completely vanished during editing.
Please, make improvement in future version not to reload page after 53 minutes.