I am not able to navigate from group header label to the cells next to it via Arrow right and vice versa (with Arrow left from group column template to group header template), even though they are cells in the same table row. What happens when I press arrow left, and at some point Arrow down, exactly cell below the wanted column header will get focus, but before that point, focus stays on the group label instead of moving to header column. The same happens in demo in official docs so I will share that example: