@songdogtech, 9 months later, your tip worked for me too! In my case it was a plugin for a WP maintenance page that was causing the issue. Thank you!
Brilliant! Thank you, was looking for this too!
Incidently, if anyone is looking for the option to remove the sidebar specifically for A page, I ran into this page which explains how to specify the specific page in the index.php file:
https://wordpress.org/support/topic/removing-sidebar-from-a-single-custom-page?replies=9
Thanks for the info! Have a great weekend
BEST TIP EVER!!! CSS editor in Jetpack kept overriding me as well, so annoying! Thanks for that FSchagen!
