Why using MinGW64 when you enter a value, it is displayed again?

Why using mingw64 when you enter a value, it is displayed again? When using Cygwin does not.
https://pp.vk.me/c629118/v629118089/1288f/SvFsaqwqn5k.jpg
https://youtrack.jetbrains.com/issue/CPP-4663

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