Hi @Roffe_DK Thanks for asking. The items identified are detailed here Security FAQs | Bitwarden Help Center
also inline below:
A: In the mobile apps, Firebase Cloud Messaging (often mistaken for a tracker) is used only for push notifications related to sync and performs absolutely no tracking functions. Microsoft Visual Studio App Center is used for crash reporting on a range of mobile devices. In the web vault, Stripe and PayPal scripts are used for payment processing only on payment pages.
For those who prefer to exclude all 3rd party communication, Firebase and Microsoft Visual Studio App Center are removed completely from the F-Droid build. Additionally, turning off push notifications on a self-hosted Bitwarden server will disable using the push relay server.
The Bitwarden Android application also includes the ability to disable crash reporting under Settings.
Bitwarden takes user security and privacy seriously. Bitwarden maintains secure, end-to-end encryption with zero knowledge of your encryption key. As a company focused on open source, we invite anyone to review our library implementations at any time on GitHub.