It seems it's not the double selection that causes the difference, but the fact that any scrollbars are taken into the calculation when they shouldn't since they disappear when the image is resized . Changing the title to reflect that.
It seems it's not the double selection that causes the difference, but the fact that any scrollbars are taken into the calculation when they shouldn't since they disappear when the image is resized . Changing the title to reflect that.