My firmware is up to date but I've noticed too that my flood lights keep turning on and off. I've played with the motion sensors and motion coverage areas, but it doesn't resolve the problem right away. The flying night bugs may be triggering the motion sensors to trigger the lights.
I've noticed that this happened last night June 21, 2020 around 9pm-9:30pm, and it may be the result of the summer soltice daylight periods. After 9:30pm, the problem went away...perhaps it was because of my tinkering with the senors and coverage area for triggering the lights. But this shouldn't be happening at all. Ring: please fix this bug.