[REG 5.15.2 -> 5.15.3] QColorDialog chooses color from mouse Hover, not click

In Qt 5.15.2 and earlier, the non-native (Qt) QColorDialog selects a color when clicking on a point in the Hue/Sat suqare.

In Qt 5.15.3, the Qt QColorDialog selects the color when the mouse is hovered over the Hue/Sat square.

This makes it impossible to select a color using the Qt dialog.

This only appears to occur when the dialog is opened borderless.