The GDevelop app does not have an exit option under File, like most apps. This is not just a cosmetic issue but an Accessibility bug.
Steps to reproduce the behavior:

Windows 10, Gdevelop app. Beta 89.
I produced the error on Ubuntu 18.04.4 LTS (Bionic Beaver). Since we are using electron, I believe it won't matter that I am doing this on GNU/Linux. Do you guys have any suggestions, nevertheless I will comb through the internet to find a solution.
Something to add here: https://github.com/4ian/GDevelop/blob/master/newIDE/app/src/MainFrame/ElectronMainMenu.js
on macOS, the close should not be in the File menu
@4ian i want to work on this issue. Can you please guide me?
@mhk19 I don't have time to guide everyone - I need autonomy from you to search and can only have time to answer to precise technical questions.
Start here: https://github.com/4ian/GDevelop/blob/master/newIDE/app/src/MainFrame/ElectronMainMenu.js and investigate the existing buttons.
Really sorry @mhk19, I was trying this one without mentioning on the thread, and saw your message a bit too late - my bad :sweat_smile:
@mhk19 take a look at the commit that fixed this to help you learn about the code so that you can be that much more up to speed when the next bug comes around.
Most helpful comment
Something to add here: https://github.com/4ian/GDevelop/blob/master/newIDE/app/src/MainFrame/ElectronMainMenu.js
on macOS, the close should not be in the File menu