When pressing tab to navigate through rows in hgrid, each element has 3 points of focus, but the user gets no feedback about what they're tabbing through.
To reproduce, click an element in hgrid, then press tab many times. I'd expect each tab press to navigate to the next hgrid row, but that doesn't happen until the 4th press.
Another behavior that would make sense would be visible navigation from the expand button to the title of the hgrid row. Pressing enter when focused on the expand button would expand or contract the row, and pressing enter when focused on the title would be equivalent to clicking it if it is linked to something.
When pressing tab to navigate through rows in hgrid, each element has 3 points of focus, but the user gets no feedback about what they're tabbing through.
To reproduce, click an element in hgrid, then press tab many times. I'd expect each tab press to navigate to the next hgrid row, but that doesn't happen until the 4th press.
Another behavior that would make sense would be visible navigation from the expand button to the title of the hgrid row. Pressing enter when focused on the expand button would expand or contract the row, and pressing enter when focused on the title would be equivalent to clicking it if it is linked to something.