Using IntelliJ 2018.2.4, and Git For Windows 2.19.1
I have tried disabling antivirus with no effect.
Git for windows x64 is installed in C:\Program Files\Git\
I have tried setting the path to git as C:\Program Files\Git\bin\git.exe and C:\Program Files\Git\cmd\git.exe with the same result
As the Windows path is set up for git, I have tried setting the path to simply git.exe (which works from the command line, and had worked in previous versions of IntelliJ) with the same result.
Other threads indicate there is a timeout after 60 seconds, however no such timeout is happening, and the window stays up until I force close IntelliJ