Just an idea... Are these battery powered devices? If so, could you try removing the batteries while you're away from the house to see if the problem continues or disappears? That should at least determine if the devices are actually sending the events or not.
Those are probably Zigbee devices, correct? There were some changes to Zigbee in the v2.0.5 release. Are you using a Hubitat Driver, or a custom driver? My hypothesis is that these devices report some regular data to the hub (e.g. a battery report) that the driver is now mis-interpreting due to the changes in Zigbee for v2.0.5. A few other custom drivers were impacted by this release and required driver updates to resolve the issue. @mike.maxwell is very familiar with these changes.