We have some issues with elements that are rendered differently across devices. So can this be because they use a different browser engine? Is it a browser engine that the device provides or is it packed inside capacitor, and is there a way to set the version of this engine so every device uses the same engine?
The Capacitor documentation seems really good. According to those docs, the browser engine varies by environment.
On Android, it uses an Android WebView with Chrome 60 or higher.
On Web, of course, it's up to the end user what gets used.