I was frustrated enough to try to go back to 9.2.1. No Go...ran into the "Software too old" message in iTunes (Windows) when I try to restore the phone after I do the downgrade to 9.2.1. Frustrating to say the least.
I'm (kid you not) 6 hours into restoring my iphone 6+ (128Gb) to 9.3 from the backup. End result will be still having the broken links problem. :-/
I'm trying to remember the number of times I've told folks not to immediately upgrade to the new release. Should have been a little more suspect of a new release that's timed with a somewhat big announcement by Apple.
Live and learn...not sure if anyone has the magic process to downgrade from 9.3 that actually works. I know that Apple is still signing the 9.2.1 IPSW file, but not sure how to get around the "Software too old message). More curious really, after the restore back to 9.3, will just wait until fix for 9.3 comes out. Which like everyone else...I hope is SOON.