How to set systemhandler Xdg-open for a roon-remote under wine/bottles

hi,
Having problems login into my Roon-account with Roon-desktop installed into bottles.

Description:
installed roon-desktop in bottles and added a desktop-entry under ubuntu 23.10.
Roon-desktop starts and sees the server and requires a login into roon.
Then, the roon-client opens a Firefox window and Firefox wants to open with the system hander a roon link - which is (obviously) not a registered system handler…
I’m stuck at this point, as the login into Roon-account fails…

Welcome to the Roon community, @Gebhard_Matt.

I have moved your post from Feature Suggestions since it was off-topic. Please post in the correct category. Thanks.

If you have a mobile device, you may find it easier to login using Roon Remote.

Question: How to define the action for a roon:// type of link under linux?
Required action pass this link to roon-remote

Details:
roon-remote is installed via wine using bottels. Ubuntu 23.10 gnome 45 and an actual flatpack version of bottels.
Start roon-remote. Pressing the login-button, this opens browser - fine.
After confirming my account in the browser it wants to redirect back to roon-remote. See screenshot.


The link to do so is a proprietary link-type: roon://login?code=xxxxxxxxxxxxxxx
Such type of link is obviously not known under gnome and IMHO Xdg-open action needs to be set. As result I cannot confirm my account in roon-remote.
Maybe somebody have an idea how to do so, or is there an workaround?

So far no one has shared a solution (assuming a solution even exists). See also: