I have a file on my local desktop computer (windows XP SP3) for transfer to a distant debian server.
I cannot see the local file: it is hidden (status bar says "1 filtré" - using french version). No filter is active (filter button not enlightened). And activating a filter matching the file doesn't show it either.
I bypassed the problem by editing the file so that its date is today: the original date was the 6th of 2016 april.