In the Estimating then View window, items can be toggled to display the title details for each individual item or not. On the top right of the View window, there is an Icon for Toggle items title display
When the Toggle is off ALL items will display the U and the T lines for every item (regardless of them being the same)
When the Toggle is on Items that have the same U and T lines will only display the U and T line for the first Item and none that follow on with the exact same details
If the Items are not together or the U or T lines are different the Titles will be displayed.