When satisfied the file is safe, right-click and select Extract all.If that is something you must have right now, a work-around, until Microsoft address this would be to use an older Build version of Sticky Notes. You are correct that the old trick of Ctrl + Shift + > for now does not increase the font size, nor does Ctrl + Mouse Scroll UP. Microsoft are introducing new features there that allows Cortana to interact with your notes, among other things. I'm fairly sure that is the latest version you have.
