If the Note window is too narrow the menu opens and cannot be closed reducing the already limited space available.
I generally run Logos in a three panel arrangement with Bible, Notes, and Commentary and resize the windows as needed for my current focus. If the size of the Note window is compressed too much the three bar menu opens and cannot be closed taking a third of the already limited space. I've confirmed this on two laptops and my desktop (Updated Win10/L8) and the web app. I'm pretty sure this has been happening for at least the last two versions of Logos.
