Three of Logos's menus (Library, File, Layouts) have edit controls in them which is unusual for menus. Due to this, there are a couple of weird behaviors when the users moves the mouse around over the top-level menu items after clicking one of them to drop down its menu:
1) Click one of these three (say, File) to drop down the menu. Do not move the mouse from the point where you clicked it! Now type something in to the Find box (say passage) to narrow down the list of files. Now you're going to move your mouse to select one of those files, but...oops...accidentally move it across the Guide menu title while on your way to point at something in the right side of the File menu. The File menu disappears. Not what you wanted. This is normal behavior for other menus in Windows apps, and it's no big deal for them, because you just move the mouse back to the title of the menu you had first dropped down and you're good to go. But in Logos, whatever you had typed into the Find box has disappeared and you have to type it in again. This is a pain. It's happened to me enough times and annoyed me that I decided to report it as a bug.
2) Open the Library in a floating window. Now go back to the main Logos window and click File to drop down the menu. Move the mouse from the "File" title over to the Library menu icon and hover it there. The Library menu will drop down! This shouldn't ever happen. Normally, when you have the Library already open in a floating window, clicking on the Library menu icon will just bring the floating window to the foreground. Logos isn't supposed to let you have two copies of the LIbrary up. I haven't tested any further to see if nasty things can happen from this point. But it would be a moot point if you resolve both of these problems in the way I'm going to suggest:
Make the main drop-down menus more "sticky" -- that is they don't go away if you move and hover the mouse over other menu titles. The only way they should go away is if you click to select something in the menu, if you click elsewhere in the app, or if you press Escape or F10 (or some other key that causes something else to happen -- e.g., I noticed that F9 and F11 work in menu mode).
