Finicky v3 and v4 cannot open to sign-in by open as a popup window

[yyfearth]

Many apps opens browser as a popup window to sign-in, e.g. Slack.
Browsers like Chrome Firefox Safari able to handle it correctly, but once I set Finicky (v3 or v4) as default browser, it can only open as Safari.

Finicky cannot handle this and opens the browser I configured. It directly opens Safari instead.

If I set my default browser as Chrome, it able to open correctly:

[johnste]

Hey, I have a few questions

Does Finicky not trigger at all? (You can tell by enabling logRequests: true and checking the logs, for example, or keeping the window Finicky open)
is your Finicky configured default browser Safari?

[yyfearth]

@johnste It does not even triggers Finicky.
How to reproduce:

1. Set Finicky as default browser
2. Install and open Slack, then use slack to login
3. It directly use Safari to open the dialog without trigger Finicky v3 or v4 at all
4. Set Chrome as default browser
5. Open slack to login
6. It opens Chrome dialog to login

I think it uses a special protocol.

[brent-hronik]

Hey folks, curious if there has been any movement on this one. For context, I can't use SSO for Claude Desktop, as it fallsback to Safari before even hitting Finicky.

The apple developer docs outlines what is needed here: https://developer.apple.com/documentation/authenticationservices/supporting-single-sign-on-in-a-web-browser-app#Declare-the-Session-Handling-Capability and states that since that Capability isn't registered in the plist file, it falls back to Safari.

[johnste]

Haven't had a look at this. Maybe I can take a stan at it soon - it's not something I've encountered myself

Thanks for digging up the docs!

[brent-hronik]

No problem, thanks for the quick reply on this!