I have started to use Pootle pagebuilder, free version and when i use it the autosave function stops working and revisions are not saved. It also seems a bit buggy, but that might be due to me being new to it. I have tested with all other plugins disabled and the problem still occurs. When pagebuilder is disabled the autosave function starts working again!
I am using wordpress 4.7.1. I have the latest version of canvas and the pootlepress canvas child theme.
Web site is http://www.birthcare.org.uk