I'm not sure why these vertices (color green) still showing even in object mode.
You can download the file if you want.
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1$\begingroup$ Include screenshots into the question body please using tools of the site so that after certain time links do not lead to 404 page $\endgroup$ – Mr Zak Oct 13 '18 at 12:37
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You only have 3 faces, therefore some edges are floating and are visible in Object mode. You need to correct this.
