Just tested again. The error comes on as soon as I click disconnect on the STA repeater upstream device
Phone is a Pixel 6 w/ Android 12 but this doesn’t appear to be related.
After tether shows up in the dashboard (seen in above screenshot) internet is only from the tether, but the error does not go away immediately – maybe it takes a while to retest connectivity?
You can also click disconnect on the STA repeater, get the error message of no internet, then reconnect to the repeater – internet tested as working – and the error message stays.