Ever since installing UpdraftPlus, i've seen some strange side effects. The most troubling is that my site goes down for up to 24 hours at a time every couple of days when the plugin is activated. When it's deactivated, the site is fine. The other things i've seen are some pages reverting to using the Default (post) Template, and page code reverting to previous versions.
I had it set to manual backup only so i'm not sure why these things are happening.