Nothing?

Hello, i'm using windows 10 insider now in build 10547, recently some file with specified extension showing the wrong icon, all the wrong icon is same as in the screenshoot:
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All error files...

Yes, looks same with this option, but still frequent folders and recent files is not separated. :\
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I tried that, but it's grayed out.

Hello everyone :)
I'm running windows 10 that was upgrade from windows 8.1, the first time i don't care about this quick access feature so i change the default explorer to 'This PC' and then i find...