In the edit popup in Timeline Grouping in the blazor demo projects and categories are not displayed. The select box shows up but you cannot see what you select. This happens in Syncfusion.EJ2.Blazor 184.108.40.206-beta and in 220.127.116.11-beta. I am working in server-side blazor in preview6. It used to work in 17.1....
HBHareesh Balasubramanian Syncfusion Team July 16, 2019 10:43 PM
Greetings from Syncfusion Support.
We could reproduce the reported issue in the mentioned versions and this was fixed in the latest 18.104.22.168-beta version. We suggest you to upgrade your version to the latest release to overcome this issue and for the same we have also prepared the below sample