I am also in the darkvision is amazing right now boat. If anything they have been overly generous with the detail a non-darkvision character can make out in places where they should simply see pitch blackness (which is probably the right call). Managing darkness is part of the game design, you have to make the call of whether to risk staying under the cover of darkness or using a torch to see.
FYI, you do get an alert if a character you aren't controlling spots something - you will see the perception check roll happen over their head and they will announce and highlight an area if they find something.
