Fixes for Parse bugs were usually not forthcoming from the Parse team---and when things were fixed, more often than not the fix was reverted within a week because it caused something even worse.
For the first six months of our time using them, Parse would only report downtime post facto and backdated by a day. “F@#$k Parse” was perhaps the most frequently uttered phrase among all of us in our douchebag Mission district headquarters. What a life.
All the time, push notifications inexplicably stopped working for hours at a time---we were running a daily sales app, and this really killed us. It ruined dozens of auctions and pissed off tons of our users. But what's even worse? Parse made my life a living hell for a year, and I'm glad they're gone.
