Hey there, this looks like a bug. Could you answer me the following questions:
Have you created a group with content? And have you set “Layer pass through” to < 100%?
I know Gayani said it is a bug, but I’ve duplicated what you did and believe the 11 reflects your line-height (and perhaps that still makes it a bug). As for your width that you underlined, that is the width of your text plus the auto-layout padding, i.e., the width of the Frame.