Hi Masoud,
Thanks for sharing the details.
We checked your query with provided code snippet but unfortunately were not able to reproduce it. You have mentioned that the filter bar is not working when having decimal values in the column but on checking it was working fine in our end. Please find the sample based on your provided code for reference from below,
Can you please let us know the Syncfusion package version that you are using in your application and if any console errors are getting thrown while filtering. It would also be helpful for us to identify your issue better if you could provide us a simple working sample for reproducing the issue or if possible try to reproduce it in the above provided sample so that we can check and provide you the proper solution for it.
Regards,
Pavithra S.