I'm getting confused about
site:example.com and "Index Status" part in Google Webmaster Tools.
site:example.com list four pages but "Index Status" has a 0 as "Total Indexed".
I don't know what's the difference between these two.
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Google Search Console doesn't show accurate data most of the time and it takes some time to update the data while "site:" will show you exact and real time website index data.
So I would suggest you to wait for Google Search Console data to be updated. Don't depend solely on the data of the Search Console.
Also have a look at this answer for in depth explanation: Number of indexed pages with "site:" search less than reported in Google Webmaster Tools