The filter menu of the Telerik UI Grid internally uses the PopUp widget. By design, whenever the space below filter icon is insufficient, the popup is opened upwards. Therefore, better visibility and usability is provided.
With that said, the positioning of the popup nowhere near the actual filter icon is not expected. I have tested the described scenario in the demo below, however, I did not notice the popup getting detach from the filter icon.
Is it possible for you to provide an example in which the defect could be observed so that I could examine it locally?
Progress is here for your business, like always. Read more
about the measures we are taking to ensure business continuity and help fight the COVID-19 pandemic.
Our thoughts here at Progress are with those affected by the outbreak.