Drop Down Control Pop Up Appearing (Way) Down The Page on Smartphone

[MichaelP]

I have a table report with three drop down controls to filter what appears in the table.  It is embedded in my website.

On a smartphone...  Two of the controls, when clicked, display the pop up with the options a long way down the page.  So far down, it's out of sight and all the person sees is the table turning grey - so it's confusing particularly for new users.  To find the pop up options, the person needs to scroll down (and down).  The third control works fine, and displays the available options 'in situ' which is what I would expect for all.  I've examined the style and set up of each control ad nauseum and apart from the data populating them, their setup is identical.

(On a laptop, everything works fine).

Anybody got any clues as to what's going on?  

[MichaelP · Accepted solution]

Ok, so it seems to have something to do with the width of the control, and how much space there is around it, in the report layout.

Not exactly sure what's going on, but by reducing the width of the controls and allowing more space between them, I was able to solve my issue.