When on the first item of the battery list, trying to force focusto the header item fails, probably because it is wrapped within aColumn.
Just setting it to null works in this case, since it automaticallycompletes the KeyNavigation.down chain, but in reverse. This isthe same trick already being used in the footer.
BUG: 489099FIXED-IN: 6.3.1
(cherry picked from commit f7b5559a)
Co-authored-by: Ismael Asensio isma.af@gmail.com