Arlo Pro 3 flood light goes on at same time every night but is turned off in profile settings

[PS22]

I have a Pro 3 camera (not the flood light version).  I have set up the profile ("Low Light settings) so that the camera uses IR at night but the flood light option is set to "no".  I assume this means that motion will not trigger the flood light.  Ever.  However, each night, at approximately the same time, the flood light goes on for about 3 seconds and a video is captured but the video shows no motion.  Has anyone had this experience?  I am 99.9% sure that the light is not being triggered by motion but cannot seem to get rid of this behavior.  The camera is using the current firmware.  Any suggestions as to what to try?

[jguerdat]

We've seen this happen with various cameras over the years. No idea exactly why this happens but it always seems to happen in the wee hours of the morning, perhaps as part of the system's check for updates or whatever.