Bug Report for wx.stc and wx.richtextctrl

[Joonhyun-Kim]

Operating system: wxPython version & source: Python version & source:

Description of the problem:

Code Example (click to expand)

```python # Put code sample here ```

Updated Bug Report (English)

Title:

Korean Characters Disappear When Entering Punctuation with Shift Key in wx.stc.StyledTextCtrl and wx.RichTextCtrl (Windows 11)

Description:

• Environment:

  • OS: Windows 11 (Issue present)
  • OS: Windows 10 Pro (Issue not present)
  • wxPython version: 4.2.1
  • Python version: 3.12.5

• Issue: When typing Korean characters in wx.stc.StyledTextCtrl or wx.RichTextCtrl on Windows 11, entering specific punctuation (e.g., ^, ") using the Shift key causes the last entered Korean character to disappear.

  Example: After typing "안녕" (Hello in Korean), if I press Shift + 6 (to insert ^) or Shift + ' (to insert "), the last character "녕" disappears. This results in "안^" or "안"".

• Steps to Reproduce:

  1. On Windows 11, open an editor using wx.stc.StyledTextCtrl or wx.RichTextCtrl.
  2. Type Korean characters (e.g., "안녕").
  3. Press Shift + a punctuation key (e.g., ", ^).
  4. The last Korean character disappears, and only the punctuation remains.

• Expected Behavior: The Korean characters should remain in the text, and the punctuation should be added without any characters being deleted.

• Actual Behavior: The last Korean character disappears, and only the punctuation is inserted.

• Additional Information:

  • The issue occurs on Windows 11 but does not appear on Windows 10 Pro.
  • The issue happens in both wx.stc.StyledTextCtrl and wx.RichTextCtrl.

[swt2c]

I have a hunch this might be the same problem as: https://github.com/wxWidgets/Phoenix/issues/2446

Can you please try one of the latest snapshot builds and see if the problem is resolved there: https://wxpython.org/Phoenix/snapshot-builds/

[swt2c]

Please also try v4.2.2 (just released) and let us know if the problem has been fixed.