AI & Agent Dev Bug Sandbox Back to Radar

Invisible Navigation-Menu Viewport Blocks Clicks And Text Selection After Dropdown Closes

On supabase.com, opening and closing a navbar mega-menu leaves a permanently mounted container (forceMount) that overlays hero content and intercepts pointer events, preventing text selection and CTA clicks.

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Origin Analysis

apps/www/components/Nav/index.tsx uses NavigationMenuViewport with forceMount to keep the viewport mounted for smooth animations when switching dropdowns. The wrapper div (absolute top-full flex justify-center inset-x-0) remains in the DOM after close but has no pointer-events-none, so it captures all pointer events over the hero area.

1. Go to https://supabase.com on desktop. 2. Click/hover Product in navbar to open mega-menu. 3. Move mouse away or press Esc to close the dropdown. 4. Attempt to select hero heading or click 'Start your project' / 'Request a demo'. 5. Observe that text cannot be selected and buttons do not respond; DevTools elementFromPoint returns the wrapper div.

Fixing Code Block

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0xA4 1C 90 3E 77 0B D2 580x11 F6 6A 2C 80 19 DE 44
0x00 00 00 00 03 00 3E 000x01 00 B7 4D 55 90 0C 61
0x6C 69 62 63 2E 73 6F 2E0x36 00 8E 17 42 AA 05 F3
0xDE C0 DE 01 8B 45 FC 890xC7 5D 20 6F 91 03 E4 78
0x13 37 00 4F 9A 2D E1 700x08 B4 5C 22 71 D0 4A 16
0x48 8D 3D 22 01 00 00 E80x91 FF 0A 63 2E 57 B8 04
0x5A 91 C3 0E 44 70 1B 880x02 6F 39 C4 15 80 ED 27
0xFF 15 40 20 60 00 48 890xC3 90 7A 01 4C 28 B1 56
0x0F 1F 44 00 00 55 48 890xE5 C3 18 6D 92 0B 33 A7

Edge Case Audit

This change is scoped to apps/www only. Ensure the inner visible box still has pointer-events-auto, otherwise the dropdown itself will become non-interactive. The attribute selector may affect any other Radix NavigationMenuViewport used within apps/www; verify no unintended menus exist. If issues arise, rollback by removing this CSS block; the original forceMount behavior will return but the overlay bug will persist until a proper unmount-on-close is implemented.