Tried the firmware resets and it had no effect on the non-sleep problem for me. But if one wants to try it, here are the instructions.
Time to sit back and hope Apple addresses this in an update very soon. 😟
How to do an SMC Reset:
https://support.apple.com/en-us/HT201295
- Shut down the computer.
- Unplug the computer's power cord from both the wall and computer.
- Wait 15 seconds.
- Attach the computer's power cable.
- Wait another 5 seconds and press the power button to turn on the computer.
How to do a PRAM / NVRAM Reset:
https://discussions.apple.com/docs/DOC-3603
- Shut down the computer.
- Locate the following keys on the keyboard: Command, Option, P, and R. - You will need to hold these keys down simultaneously in step 4.
- Turn on the computer.
- Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
- Hold the keys down until the computer restarts and you hear the startup sound for the second time.
- Release the keys.