Regression: Push buttons with CSS "padding" property not properly clickable

In Qt 5.15.1, CSS-styled push buttons can no longer be clicked in their padding area. Only the push button contents are clickable.

This is a quite severe issue; in our application, suddenly only half of the button is clickable, which is extremely annoying.

It seems likely that this change was caused by the fix for QTBUG-81452. I don't see a way to work around the issue on the client side.

A minimal example reproducing the bug is attached, try clicking the button near its edges.