I have got an UI with two sections. The first section contains a repeat grid layout. The last one is a section with detailed information about selected grid's row.
I need to provide a feature to select rows using "Up" and "Down" keys (press "Up" - one element above, "Down" - one bellow). And the section with information must be refreshed. I managed to develop a feature of focusing leveraging Up/Down keys. But I have got an interesting bug: the next row is selected, but the section is refreshed and show info about previous row.