I tried to set up the bluetooth_le tracker a few weeks ago. I disabled it when, after about a week, I noticed this problem, but the problem persists. Problem is that the Bluetooth Device Tracker stops tracking bluetooth devices after a variable amount of time. Using a Raspberry Pi 3. I logged into the Pi desktop and found the bluetooth was still functional there, so it’s not the Pi losing Bluetooth connectivity, just Home Assistant. The error log has no reported errors that match the bluetooth failure, but I can see in my HA log where all bluetooth devices switch to “away” within a minute of each other. Any thoughts on where to look to correct this error?
Never really figured this out, but I rebuilt my HA server from nothing, just saving .yaml files, and the problem seems to have gone away. Have not tried re-enabling Bluetooth LE.