Nothing wrong with my GPS after PR 1.3. Didn't have any problems with PR 1.2, either.

You do have an active internet connection when searching for your position? And you have calibrated your compass by swirling your phone? And you aren't far away from your last known position when testing?

I actually think my time to lock, when I'm nowhere near my last known position, has decreased with PR1.3.

Some information on slow lock without an internet connection here.