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Improvement
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Resolution: Fixed
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Normal
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None
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None
The invisible Hangul Filler characters have been used to bypass the edit note requirement for certain edit types. These should be stripped before determining whether or not an edit note is empty or invalid.
https://en.wikipedia.org/wiki/Whitespace_character#Non-space_blanks
https://en.wikipedia.org/wiki/KS_X_1001#Hangul_Filler