I confirm that this is indeed a bug. I've logged an issue, where we will keep track of the status of this bug: https://github.com/telerik/kendo-react/issues/891
As a thank you for bringing our attention to this, I've added 1000 points to your account.
The workaround you mentioned is a valid one until the issue is resovled.
Apologies for the inconvenience caused.
Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Check it out at https://learn.telerik.com/.