Is there an existing issue for this?

• I have searched the existing issues

Is the issue reproducible in Notepad++ without plugin?

• I have tried Notepad++ without plugin

Is the issue reproducible in portable version of Notepad++?

• I have tried portable version of Notepad++

Does the issue affect SciTE?

• I have tried SciTE

Description of the Issue

Originally reported in this Community discussion -- confirmed by @Coises. When you change from a non-English localization (except "English (customizable)") to the normal English localization, the editor-panel right-click contextMenu is truncated.

Steps To Reproduce

1. Fresh portable unzip of 8.8.8
2. Right click in the editor, see the full editor contextMenu (in English)
3. Set localization to French (or other non-English localization)
4. Right click in the editor, see the full editor contextMenu in the new localization
5. Set localization to English
6. Right click in the editor, see the truncated editor contextMenu
7. Exit Notepad++
8. Run same portable Notepad++, no other changes made
9. Right click in the editor, see the full editor contextMenu (in English)

Current Behavior

Editor-panel right-click contextMenu has truncated after going from localization=non-english to localization=English
This is the behavior in v8.7.0 and newer.

Expected Behavior

Editor-panel right-click contextMenu should show full menu even after changing localization from localization=non-english to localization=English.
This is the behavior in v8.6.9 and earlier.

Debug Information

Notepad++ v8.8.8   (64-bit)
Build time: Nov 16 2025 - 20:55:01
Scintilla/Lexilla included: 5.5.7/5.4.5
Boost Regex included: 1_85
Path: C:\usr\local\apps\npp\npp888\notepad++.exe
Command Line: 
Admin mode: OFF
Local Conf mode: ON
Cloud Config: OFF
Periodic Backup: ON
Placeholders: OFF
Scintilla Rendering Mode: SC_TECHNOLOGY_DIRECTWRITE (1)
Multi-instance Mode: monoInst
asNotepad: OFF
File Status Auto-Detection: cdEnabledNew (for current file/tab only)
Dark Mode: OFF
Display Info:
    primary monitor: 1920x1080, scaling 100%
    visible monitors count: 1
    installed Display Class adapters: 
        0000: Description - Intel(R) UHD Graphics 770
        0000: DriverVersion - 32.0.101.7026
OS Name: Windows 11 Home (64-bit)
OS Version: 24H2
OS Build: 26100.7171
Current ANSI codepage: 1252
Plugins: 
    mimeTools (3.1)
    NppConverter (4.7)
    NppExport (0.4)

=====

Notepad++ v8.7   (64-bit)
Build time : Sep 17 2024 - 17:06:31
Path : C:\usr\local\apps\npp\npp.8.7.0\notepad++.exe
Command Line : 
Admin mode : OFF
Local Conf mode : ON
Cloud Config : OFF
Periodic Backup : ON
OS Name : Windows 11 Home (64-bit)
OS Version : 24H2
OS Build : 26100.7171
Current ANSI codepage : 1252
Plugins : 
    mimeTools (3.1)
    NppConverter (4.6)
    NppExport (0.4)

Anything else?

I did a binary search through versions, and found that changing localization didn't truncate the English contextMenu in v8.6.9, but did in v8.7.0, and the bug is present in every version I tried between v8.7.0 and v8.8.8.

@Coises is currently digging into the source code to see if he can figure out what in the code is causing the problem, and will report here if he finds something, but said I could report the bug in the mean time.