What bugs have you found in android L?

Here's a new one that I've been dealing with since I installed Android L on my Nexus 5. After I make or receive a call and the phone goes to sleep I can't wake it back up. I have to put the phone on the charger, and hold the power button until it forces a reboot. If I try to restart it when it's not on the charger than it will put the phone into a boot loop. Has anyone else encountered this? Is there a solution? I've been making it work for the past week or so telling myself that the good outweighs the bad, but it's about as bad as it gets.....

I experienced this bug as well. Forced me to flash back to KitKat. This one was a showstopper for me, I can't have my phone not waking up during a call, especially if I placed that call on mute and then attempt to wake up to un-mute.