Can't enable dark mode on new Android Auto Google Maps

Got the new update, but for whatever reason, the car won't switch to dark mode on Maps. Otherwise, the new update looks and works really well.
Turn your dash lights down, it triggered mine to allow dark mode... With the dash lights turned up it kicks off dark mode.
'18 Mazda 6 Signature
Do you have a Samsung phone? The latest Samsung update changed something in my phone too where maps night mode is now controlled by the phone's night mode.

i.e. I can force maps night mode by putting phone in night mode even during day.

Or keep it out of night mode at night by disabling night mode.

I set phone's night mode on auto with sunrise / sunset and it's been working fine since.