Hi Marcus,
Greetings from Syncfusion,
We were able to reproduce the issue “IconFont Property not working on "Longer" Unicodes” and we confirm this as a bug and logged a defect report. 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.
The Fix will be included in our upcoming Weekly NuGet, which will be available on 21st July ,2020.
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,
Suganya Sethuraman