color_edit in menu

**Describe the bug**
If a `color_edit` widget is used inside a menu, it closes as soon as it is opened, leaving no chance for interaction.

**To Reproduce**
Make a top-panel,
place a menu bar inside,
add `color_edit` widget inside.

**Expected behavior**
the `color_edit` stays open, and functions normally.

**Screenshots**

**Desktop (please complete the following information):**
- OS: ubuntu

**Additional context**
im using the `egui_wgpu_packend`

Reproduce the issue on Ubuntu with a top panel containing a menu bar and color_edit widget, using the egui_wgpu backend. Trace the menu and color_edit interaction paths to find why opening the widget closes the menu, then verify that it remains open and usable.

Written by the indexing model from the issue text.