Hi Martin,
Thank you for contacting Syncfusion support.
Currently, our Syncfuison Asp.Net Core components are having dependency with the ‘Newtonsoft.json’ package of version up to v13.0.0. While installing the latest ‘Newtonsoft.json’ (>13.0.1), the reported warning “package version out of bound:…” occurred.
However, we have already logged the defect report from our end for upgrading the dependency package to the latest version and the fix will be included in our upcoming weekly patch release which is scheduled for April 13th, 2021.
We will update you once released, and we appreciate your patience until then.
Regards,
Muthukumar K