I group by the Tag "Type_B" in Grid2, but the Tag children are not always displayed next to "Type_B" as shown below. I need to refresh the grid to see the children.

I also have the "Type_B" column in Grid1 (not grouped). As soon as I add a Type_B child in that column, the Tag children disappears in Grid2, and I again need to refresh the grid to get them back.