Hello René,
I made the following page to track this issue - I can only observe it for non-editable cells, as of 2.13.0: https://feedback.telerik.com/blazor/1474712-clicking-a-non-editable-cell-in-incell-edit-mode-alters-row-selection
Regards,
Marin Bratanov
Progress Telerik
Good to see this will be in the next release !
Regards,
René