Unless you've looked at your logs and seen some sort of crazy level of events from your sensor there, doesn't seem possible that the Linptech could interfere at that level w/your Zigbee devices or the hub's radio. If the hub was being overwhelmed generally then that would likely affect both Zigbee and Z-Wave automations.
Just keeping the sensor in active state because it was seeing the ceiling fan shouldn't cause anything significant to happen other than it staying active.
Did you check your hub's Zigbee details page to see status there when things were not working?
FWIW, info on how to get the current version of @kkossev's general motion/presence driver and more info about it is here:
