I have the Unreal Engine 4.10 version downloaded from GitHub.
I’ve been using it for almost a year… but now when I go to C:\Users…\UnrealEngine-4.10\Engine\Binaries\Win64\UE4Editor.exe it opens up the latest opened project.
Before, when I launched that .exe, the Engine used to open a Project list where I had to choose which one to open.
I tried rebuilding the UE4 project in the Visual Studio solution… same issue.