I reported it a while ago at simplemachies.org, but I see that Elk also has this bug :|
Go to: Administration Center » Server Settings » General
Enable Maintenance Mode
Now go to: Administration Center » Server Settings » Database and Paths
Save settings (don't change anything)
Go to: Administration Center » Server Settings » General
Maintenance Mode is disabled.
Lets do it again:
Go to: Administration Center » Server Settings » General
Enable Maintenance Mode
Now go to: Administration Center » Server Settings » Cookies and Sessions
Save settings (don't change anything)
Go to: Administration Center » Server Settings » General
Maintenance Mode is disabled.
Confirmed and tracked https://github.com/elkarte/Elkarte/issues/1861