Removing the 'Convert to Group Node (Deprecated)' entry from the node
right-click menu made the menu just short enough to fit in the 520px
viewport these tests use, breaking their overflow precondition. Lower
the viewport to 420px so the menu reliably overflows again.
## Summary
Stops the Shape submenu (and any other PrimeVue nested submenu) from
being clipped behind the node context menu when the menu fits in the
viewport.
## Changes
- **What**: `constrainMenuHeight` in `NodeContextMenu.vue` now applies
`max-height` + `overflow-y: auto` to the root `<ul>` only when
`scrollHeight > availableHeight`. The common case keeps `overflow:
visible`.
- Added `browser_tests/tests/nodeContextMenuShapeSubmenu.spec.ts`
regression spec.
## Review Focus
Root cause: setting only `overflow-y: auto` on a `<ul>` coerces
`overflow-x` to a non-visible value per CSS spec (`If one of
overflow-x/overflow-y is visible and the other isn't, the visible value
is computed as auto`). PrimeVue `ContextMenuSub` renders submenus
in-tree as a nested `<ul>` with `position: absolute; left: 100%`, so the
implicit horizontal clip hides them entirely.
The pre-existing overflow scenario (#10824 / #10854) is unchanged — when
the menu actually overflows, the clamp still applies and
`nodeContextMenuOverflow.spec.ts` continues to verify scroll. Submenu
clipping in that overflow case is a known limitation, not introduced by
this PR.
Fixes FE-570
## screenshot
### AS IS
<img width="788" height="505" alt="Screenshot 2026-05-07 at 12 43 26 PM"
src="https://github.com/user-attachments/assets/36d34070-0c57-4385-a130-0394f22f282e"
/>
### TO BE
<img width="779" height="627" alt="Screenshot 2026-05-07 at 12 42 44 PM"
src="https://github.com/user-attachments/assets/00956729-763b-4787-822f-209e8ea42331"
/>
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-12035-fix-keep-node-context-menu-overflow-visible-when-content-fits-3586d73d365081ad9aaec82f220d401c)
by [Unito](https://www.unito.io)
---------
Co-authored-by: GitHub Action <action@github.com>
