Bitwarden autofill bug/error

Until the stable update lands, the least annoying workaround is probably to avoid Bitwarden’s inline prompt and use the extension shortcut instead (usually Ctrl+Shift+L / Cmd+Shift+L, depending on your setup). If that still fails, opening the Bitwarden popup and selecting the login manually should at least confirm whether only the page overlay is broken or the whole extension flow is affected.