Or the Nexus 4 bug where notifications wouldn't be seen when the phone went to sleep when wi-fi was enabled. 4.4.4 fixed it, but the fix was a really long time

Or the Nexus 4 bug where notifications wouldn't be seen when the phone went to sleep when wi-fi was enabled. 4.4.4 fixed it, but the fix was a really long time coming. If you were rooted, it was a one-line fix to some config file.