[Bug] Notepad3 may crash when Edit - Remove Duplicate Lines

[yfdyh000]

Notepad3 (x64) 6.25.822.1 on Windows 10 22H2.

I encountered the issue by chance, the program may crash without warning when this function is used, resulting in the loss of unsaved content.

Steps to reproduce:
Copy the following content to the clipboard.

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Open Notepad3 to get a blank workspace.
Paste the content into the program.
Press Ctrl+A to select all content.
Click the Edit -> Lines -> Remove Duplicate Lines.

You may observe the program crashing.
If the content you copy is the following, you will not encounter a crash.

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[hpwamr]

I confirm the crash (latest version: Notepad3 (x64) 6.26.130.1 beta)

Note, the following works... 🤔

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