grid.flex() not working when the last column doesn't have a set width

[STXSupport]

We have an issue using grid.flex() when the last column does not have a width set. 
All of our columns do not have the width set in the configs.

We are setting the gridConfig.paramquery property with
               minWidth: 500,
               width: '100%',                       
               scrollModel: { autoFit: true }.

Code to flex grid:

$grid.on('pqGrid:create', function (e, ui) {
             var grid = $grid.pqGrid('instance');
             grid.flex();
         });


Resulting grid


When we push a column with a fixed width into the columnConfigs as the last column then it works as expected

Resulting grid


Would you add the functionality to not use a fixed width on the last column when using grid.flex()?

Thank you

[paramvir]

scrollModel: { autoFit: true } and flex() have contradictory purpose which can't be resolved simultaneously.

Please remove scrollModel: { autoFit: true } and flex() would work fine.

Please let me know if you need further assistance on this.

BTW your attachments are missing.