Root cause: macOS emits a synthetic click event when the right mouse
button is released while holding Control. The outside-dismiss handler
was listening for click events in capture phase, which caught this
synthetic event and closed the menu right after it opened.
Fix: switch from click to pointerdown (with event.button === 0 guard)
for outside-dismiss detection. pointerdown fires on press before
contextmenu, so the right-button event (button:2) is filtered out
before the menu even opens, and the synthetic click is never seen.
Add children support for nested menu items with hover-triggered
submenus, auto-flip positioning near viewport edges, and smart
close timing to prevent flicker.
The reka-ui ContextMenu component caused significant performance
degradation when multiple editor tabs were cached via KeepAlive,
due to its heavy state machine, provide/inject chain, and document-level
event listeners accumulating across cached instances.
Replaced with a minimal CustomContextMenu that renders via Teleport
without any DOM wrapping or reka-ui dependency, eliminating the lag
while preserving the same visual appearance and functionality.
t8y2