The three map views ask for projection:'mercator' at construction, but on
Mapbox the style's own projection (globe) wins, so the map booted as a globe
while the view's state and button said Mercator, and the first "Switch to
Globe" click did nothing (rega, C2 at 0f136d25: pre/post-mapbox logs, "proj
globe -> globe"). The existing setProjectionFor ran only after a basemap
switch, never at boot.
Each view's 'load' handler (religion, rop-tree, language-families) now applies
the state's projection first; the style is ready there on both engines.
Headless, against a map whose style projection is globe: before, the map is
globe while the state is mercator; after, both are mercator.
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