Hi Ivan,
Thank you for contacting Syncfusion support.
We have validated your reported scenario from our end and we are confirming this as a bug and logged a defect report for this. This fix will be available in our upcoming volume 3 main release which is expected to be rolled out at end of September, 2020. We appreciate your patience until then. You can keep track of the bug from the feedback portal below.
The provided feedback link is private, and you need to login to view this feedback.
If you have any more specification/precise replication procedure or a scenario to be tested, you can add it as a comment in the portal.
Regards,
Durga G