I just noticed this too.
Do you happen to know where the file for this login setup is installed within Discourse? Thinking about placing
"upstream_params": {
"prompt": {
"value": "none"
}
},
within the file and rebuilding, seeing if that fixes it.
Edit: On second thought, I don’t think I can locate the file that would allow me to implement this. I think a fix from Discourse is what is necessary in order to get this functioning as intended.