Greetings from Syncfusion.
We have validated your query and checked Rotator sample with the iOS simulator version 13. But we are unable to reproduce the reported issue. Based on the stack trace we have fixed the reported issue. Please find the patch for this issue from below location.
Assembly Version: v184.108.40.206
Please note that we have created this patch for the version v220.127.116.11 specifically to resolve the issue reported in this.
Please verify this patch with your application and let us know whether your issue has been resolved or not.
Muneesh Kumar G.