It looks like Motion Lighting isn't handling that well. Level 0 can be bit wonky but usually just means "off," so I'd just not turn them on if that's what you're going for there (or put "1" for the level if you want them on but dim; Lutron dimmers might actually be able to handle something like 0.1 or even 0.01 here if you felt daring).
If that doesn't help, I second April's advice to look at what other apps/rules this device might be in use by (the device page has an "In use by" section that will tell you). The "Events" page for the device will only tell you what happened to that device, not what app did it, so you'll need to either look at other apps/rules or perhaps use the live "Logs" or "Past Logs" (on the left) to make some guesses. Since it's consistent, there's probably something else doing it. Perhaps some kind of auto-off rule/app like you were wondering about recently? 
