When a QDateEdit widget is added and the calendar popup is enabled, the text area overflows the widget border. [Here is an example|https://imgur.com/a/PDcFEos].

I've zipped up a sample project I created in Qt Creator and attached it. There are two QDateEdit widgets: one with the calendar popup enabled, and one without. You can see the text area expanded over the left side of the widget. It also appears that the text area doesn't fill up the entire widget area like it does in the widget with the calendar popup disabled.