Now, some users are claiming that they can't visit any links online. In apps such as Chrome, Mail, Messages, Safari and some other third-party apps, clicking on links leads to nasty freezes and crashes.
The bug however only affects a relatively small number of Apple users and Apple hasn't yet publicly acknowledged the problem, but one user on Apple's Support Communities claimed that he spoke with Apple Support, which said that the problem is being addressed and that iOS 9.3.1 should be out within days.
Until Apple issues a fix, you might want to wait to update your iPhone or iPad. If you're brave (and as stated earlier, the problem only affects a limited number of people) you can update to iOS 9.3 by going to Settings>>General>>Software Update.