Hi Dimitrios,
Greetings from Syncfusion support.
We were able to replicate your reported problem. We have confirmed this as a bug at our end. We will fix and include the solution on our next week patch release, which is expected to be rolled out on February 25th, 2020. Please be patient until then.
You can track the status of this problem by using the below feedback portal.
Regards,
Sureshkumar P