When defining your own User-Defined Language, Operators and Delimiters will shift the folding by one line for every Operator and Delimiter that is followed by only a CR or LF, but works just fine if it is a CRLF
As a result, not only will the folding go beyond the original codeblock, it will also shift following codeblocks by the same amount of lines.

A couple of screenshots to highlight the issue:
Bugged:

Working as intended:

Also "Folding in code 2 style (seperators needed)" will not highlight the keyword if its at the end of the file. Folding works still fine thought.