Samsara question, clock ticking down for no reason

My company uses Samsara. I'm not real impressed with it but it is what it is.

So yesterday I pull into a truckstop and park around noon. Spend a little over 9 hours in sleeper. Use personal conveyance to move my empty truck (no load) somewhere else. Go into off duty (personal conveyance shows as off duty as well. I was in pc for less than 15 minutes). After my 10 is finished I show my 11 hours for driving. Around 3am I look at my screen and the driving clock has been ticking down. It was at 9 hours. I go and edit the off duty to sleeper and it gave me my 11 back.

Basically I was not moving for 14 hours in a combo of sleeper and off duty. Any ideas as to why my clock started counting down after being off duty for almost 3 hours? And why would I get it back after switching it to sleeper?

 

Yeah, the split sleeper is kind of funky and doesn't seem to work right half the time so I don't trust it. But this wasn't split sleeper, or at least it shouldn't have been. This was after 14 hours off with an off duty and sleeper birth combo.

It must just be some weird coding. I really wouldn't recommend Samsara. It's what the company wants to use, probably because it's so simplistic.