If you have multiple same-named characters (same name, same
@) each with different amounts of donated credits, the leaderboard flickers when you select one of them. It seems to flicker back and forth between the characters, because sometimes it resolves to the top one, sometimes the bottom one, when you press up or down to stop the flickering. This happened in our fleet when a character deleted an alt and later recreated it the with the same name.
It doesn't happen when you sort by name, only when you sort by donation credits.