[Bug]: Controlled ComboBox onStateChange calling onChange with selectedItem as 'undefined'

[simson1]

Package

@carbon/react

Browser

Chrome

Package version

1.72.0

React version

19.0.0

Description

• onStateChange of combobox receive changes as a function parameter. onStateChange?: (changes: UseComboboxStateChange<Item>) => void
• changes object can't have selectedItem as a property all the time.
• So, It is passing undefined as a selectedItem for steps mentioned below.

Reproduction/example

https://stackblitz.com/edit/github-zurxxwnj?file=src%2FApp.jsx,package-lock.json&preset=node=

Steps to reproduce

1. Select value '1' from combobox.
2. Click on combobox and remove value '1' with backspace/delete.
3. Now click on MenuItem with value '1'.
4. combobox input value becomes empty.

Suggested Severity

Severity 3 = User can complete task, and/or has a workaround within the user experience of a given component.

Application/PAL

No response

Code of Conduct

• I agree to follow this project's Code of Conduct
• I checked the current issues for duplicate problems