I'm getting a weird issue with editing pages after upgrading from V9.2 to V11. Any time I make a cosmetic change using the UI on the front-end the CSS seems to switch over and the all the formatting is lost. Even just adding a new widget to the homepage, I have to revert all changes to factory default to bring back the original CSS.
The only change I made was adding a "Groups - List" default widget to the sidebar. It changed everything from the Font on the Activity stream to the width of the "Featured Content Carousel" Widget.
Has anyone come across this before and is this an issue of the Upgrade? \