Hi Paul,
Thanks for contacting Syncfusion Support.
We have checked your query and prepared sample according to your code example using URL adaptor which can be downloaded from the below location
We need some additional information to find the cause of the issue. Could you please share us the following details given below.
1.Share us Grid code example (both in client side and server side).
2. If possible provide us hosted link or sample or else reproduce the issue in the above sample and revert us back.
3. Screenshot/Video Demo to replicate the issue.
The provided details will helps us to analyze and provide you solution as early as possible.
Regards,
Farveen sulthana T