Another issue since today’s Fiji update on OSX: save and open via keyboard shortcuts (cmd+S and cmd+O) launch two dialog windows. Both are functional (you can select the file to save or open, then cancel the other one) but it’s rather odd. It does not happen when directly calling FIle>Open or File>Save via the Fiji menus.
I can also confirm this.
All keyboard shortcuts (duplicate, close window) are submitted twice.
(closing 2 windows at once was not what I was hoping for!)