When the width of any View in CRM 2013 is bigger than the screen size, the last column does not display the Sorting sign which is hidden by the Filter and Refresh icons.

Repro:
Create Personal View > Add Columns > select all fields > put a populated field in the last column like “Last Name” instead of “Yomi Name…” > click Save > give a name to the view > close.
Open the view from the Entity > scroll vertically to the last column > click on the heading of the column > sorting is done but filter sign missing/blocked by the Filter and Refresh icons.

Workaround is to move the last column to any other column so that the filter sign will be displayed.