Created attachment 4789 Screenshot with labels It's a bit strange, but the window-buttons plugin shows different icon-sizes (without changing the panel size obviously) with and without labels. With labels on a 24px panel the icon-size used is 16px (which is appropriate, and the icons look sharp). When hiding the labels, the icons used seem to be much larger and scaled down. Not a biggy, but probably not too hard to fix..?
Created attachment 4790 Screenshot without labels
Fixed in git master. The window buttons plugin now doesn't meaninglessly scale icons anymore.