GridGroupingControl extended filtering problem

Syncfusion version 3.201.1.0

I have a form where I allow the extended filtering to be turned on or off for a GridGroupingControl via a checkbox. But, the first time the grid loads, when I turn on extended filtering all the cells in the filtering row that appears are empty. If I reload the grid, then the dropdowns appear fine, but never on the first load.

I've tried forcing a refresh after I'm done loading, hoping that it would update the filtering lists or something, but no luck there. Any ideas why it's happening or how I can work around it?

(Note: Upgrading to a newer version is sadly not an option)

Some more information in case it helps...

I have a PushButton column. I have two calls that set the cell appearance to GridCellAppearance.Raised and the description (button text) to "Go To". If I skip these two lines, the filtering appears fine on the first load. However, the buttons are obviously not quite what I want. Is there another way to set the buttons up? Maybe that's all I need.

Hi Brian,

We were not able to reproduce the issue here. Is it possible for you to upload us a sample or modify the attached sample to reproduce the issue here? This will help us to analyse the issue further.

Here is a sample.
GGCResetDatasourceWithFilter.zip

Best Regards,
Haneef