Hi, the Hang issue replicated for me as well. Whenever i create or edit a sidebar this happenes, but when i create although it hangs, when i refresh it has been created. I am using a custom theme – Chords Light by CSS Igniter.
This is what chrome shows
Uncaught TypeError: settings.data.search is not a function(…)(anonymous function) @ admin-widgets.js:21dispatch @ load-scripts.php:3r.handle @ load-scripts.php:3trigger @ load-scripts.php:3a.event.trigger @ load-scripts.php:9y @ load-scripts.php:4c @ load-scripts.php:4
