QtWidgets webpage breaks when zooming out the page in the browser

Pages with QtWidgets can be zoommed in in the browser but cannot be zoomed out.

For instance this simple page with a label and lineedit show as this with 100% zoom:

And with 90% zoom it breaks as this:

Interestingly QML pages are not affected by this problem.

Attached is a very simple project that reproduces the issue and the images above.