Two things about the Start Window I noticed today.
1) If I have a file open and use the Tray Icon New option, I get a new untitled buffer with the Start Window. If instead, I click on the New toolbar icon, I get the new untitled buffer without the Start Window. This might be intentional, but I initially expected these two to work the same, while if I choose the configuration type from the File | New menu, I would not get the Start Window.
2) If I have a file open and use the Tray Icon New option, I get a new untitled buffer with the Start Window. If I then close the buffer with the tab’s X icon, the Start Window remains open. If I use Ctrl+F4 instead, the Start Window disappears.