The click-outside scrim was a full-window TouchArea — it covered the
tabs and intercepted their hover events, so hover-switching between
menus still did not work (same failure mode as the old PopupWindow
grab). The scrim now starts below the header, leaving the tabs
hoverable. The panel also dropped from header-height + 6px to 45px,
removing the unjustified gap between the tab and its dropdown. Header
tab labels lost another 2px of right padding.
cc
vicrodh
9a964477e5