After loadFinished QWebEngineView does not update the view

[seamoce]

Hi all,
I'm currently having problem with QWebEngineView (QT 5.15). I wanted to show an html file into a widget containing a engineview, after calling load I get all the loadFinished signals, but the widget doesn't update. The only workaround I have found is to hover on a different widget (so focusing out of the engine view) and return into the engineview with the mouse, What I'm doing wrong? Just to want to point out that doing the same in a QDialog works perfectly.

This looks similar to what is described here: https://bugreports.qt.io/browse/QTBUG-58317.