Hi Paul,
Thanks for contacting Syncfusion support.
Query: “toggles a list of Orders between no orders and a filtered list of orders the grid stops refreshing I can't figure out why”
We have analyzed the reported issue at our end by preparing a sample using your code example and we are able to reproduce the reported issue while using the Nuget package version lesser 18.2.0.59. Since it is a known issue, we have fixed the reported issue in our latest release 2020 Volume 3 (18.3.0.35). So we suggest you to resolve the reported issue by upgrading your application to our latest version 18.3.0.35.
Please find the release notes from below
For your convenience we have prepared a sample using your code example and latest version Nuget package.
Please get back to us if you have further queries.
Regards,
Vignesh Natarajan