This is on a newly initialized confluence site, to try to get a clean test for the functionality..
I added the PlaySQL Spreadsheets plugin, created a spreadsheet, and then a query for that spreadsheet.
To the query, I added a User Parameter, expecting the user parameter dialog from the query creation page to appear so that my user can enter their value. Instead, the dialog doesn't appear, and the playsql query widget is missing the red upper left cell, and otherwise looks strange.
This second screenshot is the same query with a default value put into the User Parameter widget. But still no place for the user to add their value.
Is this a known bug? or am I doing something wrong? Is there a version I can roll back to that works properly?