Hi,
I've implemented a <kendo-grid-column-group> in my Grid and discovered this lead to warnings being plotted into the browser developer console:
You can easily verify this by the official example:
https://www.telerik.com/kendo-angular-ui/components/grid/columns/headers
-> Edit in -> Stackblitz -> Open Console
I'm working with the latest Kendo version 21.2.0 and ng 21.0.2.
Is this a known issue? Thanks in advance!