Passkeys not working

Logged in on this forum. Visiting my Profile's Sign-in & Security page.
As suggested, create recovery codes, and save them in my 'devolutions-forum' credentials entry in my Personal Vault.

'Add a key' -> Devolutions Workspace extension pops up to store the new passkey. Picking a different name ("devolutions forum passkey"), folder ("Passkeys"), for my User vault. Click Save.

The passkey is successfully saved.
Select "use for passwordless login" (not encryption key storage).

Log out. (actually, closing the incognito window i was using)

There is a new entry in my Passkeys folder, but it seems empty: "Nothing to copy to clipboard" for any of 'username', 'password', 'domain'.

Start a new session, Login.
Fill in username, with selected entry in Devolutions Workspace extension. Continue.

Next page, I'm asked to provide the passkey; Devolutions Workspace plugin comes up with a 'Select passkey' , but can't find any.

Have to "Use another way to log in"

Same issue with other sites (passkeys-demo.appspot.com for example)

Running version 2026.1.1.1 64-bit on Ubuntu Linux 24.04