UTF-16 BE BOM (Big Endian) encoding adds redundant characters when viewed in Hex Editor.

[liufeiyafly]

For instance, when pasting the Chinese character 中 or more in Notepad++ with UTF-8 encoding, convert the encoding of characters to UTF-16 BE BOM (Big Endian) and then viewing it in Hex Editor, additional characters appear after the character 中.
When there are redundant symbols, disabling the HEX viewing mode in the Hex Editor can even cause Notepad++ to crash abruptly.

The Hex Editor is version 0.9.12, while Notepad++ is version v8.6.