QWebEngineView crashes application when clicking on a list item

The following code invariably causes the entire application to crash when clicking on "Crash", but not when clicking on "No crash":

#include <QApplication>
#include <QtWebEngineWidgets/QWebEngineView>

int main(int argc, char *argv[]) {
    QApplication a(argc, argv);
    QWebEngineView w;
    w.page()->setHtml("No crash<ul><li>Crash</li></ul>");
    w.show();
    return a.exec();
} 

1. The crash also occurs for both local and remote URLs set using setUrl.
2. The crash also occurs for the simplebrowser example. To reproduce, load https://en.wikipedia.org/wiki/Wikipedia:Contents and click on the "Vital Articles" link (see attached screen recording).
3. For real-world Internet web pages, not all list items always cause a crash. However, the examples above (the inline HTML example and the "Vital links" on Wikipedia Contents) always cause a crash.
4. The bug occurs both in Debug and Release mode. Nothing is output by the MRE (the code snippet above).

The attachments include:

• A recording of simplebrowser crashing;
• a dump of simplebrowser after crashing;
• A minimum reproducible example (not simplebrowser), essentially the code snippet above with an accompanying .pro file.