Yes, I believe there was a possible problem when the world event was going on but everything seems fine with all crops over an hour long now.
There was also concern also that 20 hour crops didn't consistently drop truffles but I harvested 6 x 20 hour crops yesterday with no trouble. 6 x 20 hour crops = 120 truffles.
Anyway, on my main account I decided to do a little speed-breeding today since I needed bombs for mining (I really needed to expand) and I was sitting on a ton of gems with nothing really to spend it on. I got a Hedgehog after 9 tries, making 18 tries in total since this started. Also got a Bamboon which I didn't have either.
The best part is that immediately after putting Hedgehog in the nest I got a 21 hour timer with Daredevil & Gargolem which can only be a Gold Lion and I have been trying for MONTHS to get it. Yay!
Good luck to everyone still trying for Hedgehog. I am seriously going to start keeping baby-extras of any 'rares' I breed from now on.