Search widget use bombs with "A problem occurred with this webpage" with ArcGIS online hosted apps, I have a few, does this across the board.
The widget works fine in a jsapi app we hosted elsewhere. Also seems to work ok using Chrome on iPad / iPhone.
Seems to be a common Safari / iOS issue, in general, but sure is an issue with AGOL hosted apps.
AGOL / Search widget and Safari, are there any workarounds?
... besides these:
-Running webpage / AGOL hosted app from an icon on home screen seemed to help
-Other sources referred to clearing cache, freeing memory, no results for us with that
-using chrome on iOS devices, which seemed to help