wrong control headers on localhost

Here are my configuration files :

config.jsonsettings.yml

And here is the header of the option

OPTIONS /.well-known/openid-configuration HTTP/1.1
Host: localhost:8000
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:87.0) Gecko/20100101 Firefox/87.0
Accept: */*
Accept-Language: fr,fr-FR;q=0.8,en-US;q=0.5,en;q=0.3
Accept-Encoding: gzip, deflate
Access-Control-Request-Method: GET
Access-Control-Request-Headers: sentry-trace
Referer: http://localhost:1234/
Origin: http://localhost:1234
Connection: keep-alive

@plup @calummackervoy any idea ?