Weird problems with Safari: search bar and tabs

I had exactly the same (but on Yosemite), and found this (https://discussions.apple.com/message/29693684#29693684) resolved it.

Uncheck Use Safari Suggestions in the Search tab in Safari Preferences.

Certainly not a solution to the problem, but gets around it until more concrete information comes out..

I had the same issue since this morning, I guess it could be something "malfunctioned" or badly processed data arriving from Google suggestions:

Got rid of it by going to: Safari -> Preferences -> Search

Here everything was ticked, I unticked all, then reticked "Include search engine suggestions" only, the problem stopped.

Edit: Safari suggestions was the problem, not google, sorry, ticking back everything else and it works, ticking back Safari suggestions and it dies.