I’m having the same problem, MAC clients excluded via VPN Policy from using the VPN are dropped after few hours and the only solution is to reboot. This is an extremely annoying issue!! I made the switch from PfSense for similar problems I had where the only solution was to reboot it. Seems I’m cursed. Do fix this asap, please!
PS: added this functionality to the Android app too, I was pissed off that I cannot manage my exclusion list from my phone.
Thanks.