Can't log into cody on vscode clones like Positron/VS Codium

When trying to log into cody from Positron or VS Codium, the browser wants to open up VS Code. This essentially means VS Code clones that are perfectly capable of using Cody, aren’t able to log users in.

This shoud not be a geneal problem.
I try since a few days to get acces to Cody at CachyOS, a Arch based Linux distry, - without success.
At OpenSuse it works easy und like expected.

Installations are with latest updates at both distros.
In my mind its something caused by the security settings, but till now i don’t figure out to change…