I have noticed a serious bug related to the search feature that will wakelock the device. Here are the reproduction steps:
1.) Conduct a search via the dialer app for a business or nearby place.
2.) Call the number. Then end the Call.
3.) Repeat steps 1 & 2 above with 2 additional businesses.
This should cause the dialer app to wakelock the device. I have tested this numerous times and the only way to keep the bug from occurring is to disable the search feature and caller ID features of the new application. (Cache wipes, factory resets, flashing factory images, etc. do not fix this issue. It is a bug with the app).
If anyone has a solution, please post below, but I think we may have to wait for a fix from google on this. 4.4.4 still has the bug.