Yes, we will check it.
Are you using the same USB modem?
Let me explain the problem more carefully.
There is a design flaw to be optimised here, our UI does not indicate the true enabled status. Tethering is actually dependent on two statuses:
- whether the logical interface is enabled or not
- whether the device is successfully connected
So, the so-called auto-enable does not exist and the enabled state of the interface does not change on reboot.
You can check LuCI → Interfaces to see if the Tethering interface is enabled. I suspect this is a connection problem with the USB Modem on reboot.