We recently upgraded to portal v11.1. I search for the 'OpenStreetMap Light Gray Canvas Base', open it in mapviewer classic, make my edits and hit "save style and close" but nothing happens. I must cancel out and am asked "Save changes? Do you wish to save your styling changes before closing the style editor?". Again hitting yes results in nothing and I must select no and close losing my changes.
I am doing this as an admin with full permissions and can do so just fine in 10.9.1.
What am I doing wrong here?