The File Open Dialog seems to be an old one. You should be able to type paths that are not valid but sublime to fix the path separator if you typed '/' instead of '\' on Windows. For example opening file at: C:\Folder1/Folder2/Folder3/textfile.txt doesn`t work.
Also alt+v should open the view types, I usually switch to detailed view by using combination cltrl+v then press l and it switches to details view.
Maybe the control is older.
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