As noted in a sibling to your comment, there's a choice between WebKit and Blink (your build allowing). Here's QT's note addressing your concern in QtWebEngine

As noted in a sibling to your comment, there's a choice between WebKit and Blink (your build allowing). Here's QT's note addressing your concern in QtWebEngine: https://wiki.qt.io/QtWebEngine#Relationship_to_Chromium https://wiki.qt.io/QtWebEngine#Relationship_to_Chromium Auxiliary services that talk to Google platforms are stripped out