The location map's tile-pane (z-index 200), marker-pane (600), and
control-pane (800) outranked the page modals' z-50 because the map's
container didn't establish its own stacking context. Modals opened
over the page rendered BEHIND the map tiles (visible in the Edit
Location, Assign, Remove, etc. modals — anywhere overlapping the
right column).
Fixed with `isolation: isolate` on the map container. That CSS
property forces a new stacking context without needing to rewrite
Leaflet's internal z-indexes, so all the map's panes stay contained
inside the card and z-50 modals correctly render on top.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
serversdown
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