[Error] An error is caused if the source code contains English characters

Included in the original code

public static string[] SplitStringByComma(string input)
{
string[] splitStrings = input.Split(new char[] { '，', ',' });

return splitStrings;
}

After FSR processing

public static string[] SplitStringByComma(string input)
{
string[] splitStrings = input.Split(new char[] { '��', ',' });

return splitStrings;
}

No problem if don't use Chinese characters