This post turned out longer than I expected, so in short let me say that:
1 - I understand everyone's frustration
2 - Suck it up, don't scrub audio as much or just go back to CC(12) if you need to, and your frustration will go away.
I disagree that the reliable alternative is CS6 on OSX 10.8 as bsbeamer states above. And MAB991, Apple Motion 5 will never be considered an alternative in my opinion, but good for you for trying it out.
I've been using CC (12) on 10.9 once I saw that combo was working, and it's always been stable for me. Once I saw this thread, I've switched back to CC (12) from CC2014 and I feel like a normal human being again and my wife has even started talking to me again. I get it. The bug sucks and it sucks the productivity from your ability to work. But seriously, just go back to using CC (12), it should still be on your computer after the CC 2014 install. And if it's not, just download it from Adobe and install it. There are instructions above on how to find it.
I understand everyones frustration, I was there myself. I broke the cardinal rule of "NEVER UPDATE IN THE MIDDLE OF A PAYING PROJECT." I only have myself to blame for that one. I knew about the rule and I broke it. I really wanted to use some of the new keying features for my project. I did, and they were awesome. But once I got into the more motion graphic intensive areas of my project and audio scrubbing, the bug became a problem. I had already done a lot of work in CC2014 so opening up my older version of the project was not an option. Use the "Save As CC (12)" option in the save menu to get your project back into CC (12). More info on that in the comments above by Szalam.
And weren't we "stuck at the mercy" of Adobe for updates and patches before the subscription? I certainly know I wasn't writing code for AE to make it better.
Adobe dropped a shiny new tow in front of us to play with. Some of us grabbed it, started playing with it, and it cut our finger. We cried for a minute. Then went back to our old, trusty toy and started having fun again. You can play with the new toy now if you're careful; or you can wait for the sharp edges to be removed and play with it then. It's your choice.