I noticed that QPushButtons are rendered about two pixels lower than other widgets, like QComboBox or QXCheckBox. If these widgets are put next to each other, this is noticeable as along with the outside of the widget, the text baseline (which is appears correct in relation to the widget boundary) is then also shifted by two pixels. This is definitely noticeable in the application.

Attached are a source code that produces the bug, and a (upscaled) screenshot of its output that shows the offset (lines added).

I believe this problem also occurred in older versions of Qt, but it now bothers me in my application so much that I felt like I needed to open this bug report, so I don't believe that it's a macOS26 compatibility issue.