Cascading Parameters affecting each other

Hi,

I created a report which contains two dropdown parameters that by clicking any one of them then other parameters get values (cascading parameters).

I'm facing a stange behaviour when placaing the two dropdown prameters within the same row in the parameters section, then, selecting an item of the first cascading parameter doesn't take effect until I select the required item of the second dropdown parameter (both parameters are not related).

But by placing both dropdown parameters in diffrent rows then no stange behaviour occures.

Please, I need your help,

Regards,

Bader