Unhide group with first sequence as representative doesn't select the first sequence

Open uniref50.fa, select several sequences, use the context menu to make the first of them the representative. All except the representative sequence are hidden.
Now right-click and 'Reveal all' - all are unhidden, all except the representative sequence are selected, i.e. the group has lost one member.
Note this works correctly if any sequence other than the first one in the group is the representative.