title: SSRS dropdown parameters won't re-populate
body: <p>When I access any reports in reportserver, I am able to see the drop-down parameter being populated.  However, when I click on the drop-down arrow and click out of it AND then try to re-click on a drop-down parameter, it will no longer load.  These parameters aren't relying on any other parameters.  They get their values for a dataset.  </p>
  
  <p>Since, this is a problem with all the reports, do I need to modify the reportviewer.aspx?  Any idea how to fix this issue? </p>
  
  <p>Screenshot (the parameter drop-down pretends to load and then gives up after a second):
  <a href="https://i.stack.imgur.com/Xy42y.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Xy42y.png" alt="enter image description here"></a></p>