See https://codereview.qt-project.org/#/c/229879/
In case of high background load the renderer process may receive the ViewMsg_UpdateWebPreferences message after the page load finished. Due to this, I don't think we can guarantee that the setting set in QWebEnginePage::acceptNavigationRequest() will be applied in the corresponding page load.
- resulted from
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QTBUG-66656 Turning JavaScript on in acceptNavigationRequest doesn't always work
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 - Closed
 
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