problem when whole line copying [1]

I want to select and copy the whole line, so I move the mouse in the beginning of a line, hold clicking the left button. Then I drag the mouse down to the line I want to copy, right-click and select "copy" from the pop-up menu, but I get one more line than have expected while pasting the results.

Program Ver. : Xshell 3.0

The problem has been found and we will fix this bug in the next release.

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