DatePicker does not trigger onChange when manually clearing input text #946

Issue for react-component/picker

Title: DatePicker does not trigger onChange when manually clearing input text

🐛 Bug Report

rc-picker version: 4.11.3 (also affects latest versions)

📝 Description

When a user manually selects and deletes the date text in a Picker input field (by selecting all text and pressing delete/backspace), the onChange callback is not triggered. After the input loses focus (blur), the previous date value re-appears.

This behavior is inconsistent with:

• Clicking the clear button (which properly triggers onChange with null)
• User expectations (manual deletion should clear the value)

🔗 Related Issues

• DatePicker does not allow manual clear ant-design/ant-design#52473

📦 Reproduction

Codesandbox: Link to reproduction

Steps to reproduce:

1. Render a Picker with a value (e.g., "2023-08-01")
2. Click in the input field
3. Select all text (Ctrl+A / Cmd+A)
4. Press Delete or Backspace to clear the text
5. Click outside the input (trigger blur)

Expected behavior:

• onChange should be called with null
• Input should remain empty
• Value should be cleared

Actual behavior:

• onChange is NOT called ❌
• Input resets to the previous value ("2023-08-01")
• Value is not cleared

📋 Additional Context

This issue affects:

• ✅ Single date picker
• ✅ Range picker (both inputs)
• ✅ All picker modes (date, week, month, year, quarter, time)

Reopening this issue here recommend by @zombieJ