Earlier quoted context omitted.
In theory the Bitwarden server (and Vaultwarden) shouldn't have any access to the passwords, so a data breach of the server should never disclose any contents of the vault. Vaultwarden "feels" safe to me, but I would also be interested if there is some possibility it could introduce some degraded security compared to the official Bitwarden server. My Vaultwarden instance is "hidden" on a subdomain that probably nobod…
Good point actually, the passwords are encrypted with official Bitwarden client apps (unless using web app).
I think even the web app does the encryption in the browser.
The bitwarden windows app and the browser extension are more or less just the web app inside a webview.