Hi Leonardo,
Thanks for contacting Syncfusion support.
We have analyzed your query and we suspect that you are facing issue when the grid doesn’t contains rows or first row of the grid is empty, the filter dialog doesn’t opens. If it so we suggest you to set type property of columns in grid.
Based on this we have already documented a Syncfusion knowledge base and that can be available from the below link.
Note: This solution will be applicable for filterType as “excel”
If you still face the issue please get back to us with the following details.
1. Share the screenshot/ video of the issue that you have faced.
2. Share the grid code and server side code that you have used.
3. If possible please replicate the issue in any of the simple sample and provide us.
The provided information will help us to analyze the issue and provide you the response as early as possible.
Please let us know if you need further assistance.
Regards,
Manisankar Durai.