key authentication not working in Tabby Web (Password works, key works in Tabby App/other SSH clients)

[jang2162]

In Tabby Web, public key authentication does not work.
The same key, host, and user work fine in Tabby App and in other SSH clients.
Password authentication also works in Tabby Web with the same host/user.

Eugeny/tabby#8183

Eugeny/tabby-web#127

This looks like a similar problem. Is there any known fix or workaround to make key-based authentication work in Tabby Web?

Logs

Tabby Web terminal:

SSH  Connecting to develma.com
SSH  Host key fingerprint:
SSH   ecdsa-sha2-nistp256  <...>
SSH  Loading private key: vault://<...>
X  Error signing data with key: wrong private key type
SSH   X  Remote rejected opening a shell channel: Error: Not connected

Browser DevTools:

[ssh-abc.com-2222] Server does not support auth method hostbased
[ssh-shell-abc.com-2222]  X  Remote rejected opening a shell channel: Error: Not connected