Different height of QDateEdit w/o popup enabled

There is a layout problem when comparing two QDateEdit widgets—one with a calendar popup and the other without. The widget without the popup appears to be rendered approximately 2 pixels lower in height, while the widget with the calendar popup is about 1 pixel higher than a normal QLineEdit. This discrepancy in height between the two widgets affects the overall layout.

Steps to reproduce the issue:

1. Build and run the attached example project.
2. Observe the difference between the two QLineEdits.

Expected Behavior:
Both QDateEdit widgets should have the same height or render consistently in terms of layout.

I have attached a screenshot with red highlight lines indicating the issue, along with the example project for further investigation

It is happening on Kubuntu 24.04.2 LTS and Ubuntu 22.04 LTS.