Patch Changes
- 380e897: Sidebar select overlays no longer get painted over by the next sidebar box (#1352): every
.sidebar-boxis its own stacking context (z-index: 1), so an open overlay (appendTo="self", z 1001) was trapped inside its box's context and later sibling boxes painted over it — the "transparent dropdown" symptom..sidebar-box:focus-withinnow raises the whole box (z-index: 20) while its control is open.