I've run into this bug with the latest updates today. When adding a custom Submission Grid to my homepage with the new customization tools and setting this new grid to Sort By > Popular, my userpage no longer loads. (Using Google Chrome browser.)
Not even the custom Profile infomation text was loading both on the userpage and from within the Edit Profile menus.
When removing this custom Submission Grid sorted by Popular, the userpage loads normally again and the Profile tab from the Edit Profile menu also loads correctly.
Customer support service by UserEcho