Cluster is now in-flow with margin-left:auto and flex-wrap:wrap so
when the chip text grows long enough to crowd it, the buttons split
to a second row of icons before they have to cover the chip. The
absolute-overlay behavior kicks back in at very narrow pane widths
(<380px via @container docpane) so From: still fits on one row when
the pane is truly cramped.
93ae65f99f