How problem occurs?
If I click "Product has Children?" on "1 Children", I get a filtered view of product's children. If I press the "Reset" button above, nothing happens and I'm left with the same view of 1 product.
If I then edit the product, cancel/save and then I press "Reset", it does work.
Might be a problem with how the "Reset" button works at product filtering?
Even when I Save & Close a child product, the problem occurs. I get filtered products table.