Hab das hier im Netz gefunden. Kannst ja mal schauen, ob es diese Optionen auch für Android Automotive Vivaldi gibt und ob du es deaktivieren kannst:
Stay in the browser
If you have the app installed on your phone, links from the same service will often want to open in the app to display the content. For example, YouTube and Google Maps. If you prefer to stay in the Vivaldi browser, you can enable a setting that will prevent the external app from opening. Instead, the link will open in a new browser Tab.
To turn on this option:
- Go to [Blockierte Grafik: https://help.vivaldi.com/wp-content/uploads/2019/08/Vivaldi-menu-mobile.png] Vivaldi Menu > Settings > Web Pages;
- Enable Stay in browser.