The xl breakpoint was a fact about the FEED's toolbar, hard-coded into
the switcher that E4's managers are meant to reuse — their rows are far
emptier and would have hidden the label for no reason. It's a prop now,
defaulting to icon-only.
The two views spans collapse into one builder, which also fixes a
regression I'd just added: splitting them put the exact-count tooltip on
the number alone, so hovering the word gave nothing.
peter
f702526cef