On mac the keyboard input for numbers and text is not working when launched with -popupwindow in Steam, this means you can't rename units or cities and you can't change the numbers in Trade and Diplomacy (thus you are forced to use +/- buttons which is a problem for big quantities). I can confirm this issue on the past 3 previous version of MacOS. 


When -popupwindow is disabled, the application borders is shown which is not good given that full screen doesnt work....