Symptoms
Users are able to click the column header and sort the column. This is unwanted behavior.
Diagnoses
How-to put to disallow an end user from sorting tabs in a list view.
Resolution
In a list view layout pane, select the column the end user is currently able to click and change the sorting. In the Properties pane, make sure the Column tab is clicked. Uncheck the Enabled checkbox. You will have to repeat this for each column.