title: Adding new columns to RDLC, existing columns overlapped
body: <p>I have an RDLC report, in which I need to add two new columns between other columns.
  When I add a new column and run the report, the new column does not show in the report, even though the visibility of column is true.</p>
  
  <p>I found that whenever I create a column its Z-Index is 0, while all other columns and textboxes have some value for Z-Index.</p>
  
  <p>What is the cause of this? Why do newly added columns show problems in rendering, as compared to existing columns?</p>