Login fails

[ThijsMaas]

I'm running this docker in unraid and it spawns successfully, but when I try to log into the webUI, the page just refreshes the login page. The web console shows this Warning:
Cookie “SID” with the “SameSite” attribute value “Lax” or “Strict” was omitted because of a cross-site redirect.

I'm using firefix and when I disable all my addons nothing changes, but when I try to login using 'private mode' is does work.

Any clue what is happening here?

[ThijsMaas]

I understand this has to do with the way firefox handles cookies, it is not an issue on google chrome for me.