Hi Adrien,
Greetings from Syncfusion support.
We have validated your reported issues at our end. We are able to reproduce the issues that you have reported. We have logged the defect report at our end and the fix will be included in our weekly patch release which is scheduled to be rolled out by November 10, 2020. You can track this defect status in the below feedback link. We appreciate your patience.
Please let us know if you need any further assistance.
Regards,
Ravikumar Venkatesan