Impossible to get single newlines in help text

The expected format is:

  --annotations [disabled|comment]
                                  Specify the type of annotations to include in the XML output.
                                  'Disabled' - no annotations.
                                  'Comment' - annotations as comments.

The actual format is either:

  --annotations [disabled|comment]
                                  Specify the type of annotations to include in the XML output.

                                  'Disabled' - no annotations.
                                  'Comment' - annotations as comments.

or:

  --annotations [disabled|comment]
                                  Specify the type of annotations to include in the XML output. 'Disabled' - no annotations. 'Comment' - annotations as comments.

However the text either has no newlines, or it has double newlines.
I expected this to work:

@click.option(
    "--annotations",
    type=click.Choice(Annotations, case_sensitive=False),
    default=Annotations.Comment,
    help="""Specify the type of annotations to include in the XML output.
    \b
    'Disabled' - no annotations.
    'Comment' - annotations as comments.""",
)

But that ends up without any newlines.
Adding an extra blank line before the \b does work, but that also results in an extra blank line in the output (as seen above):

@click.option(
    "--annotations",
    type=click.Choice(Annotations, case_sensitive=False),
    default=Annotations.Comment,
    help="""Specify the type of annotations to include in the XML output.

    \b
    'Disabled' - no annotations.
    'Comment' - annotations as comments.""",
)

Environment:

• Python version: 3.10.11
• Click version: 8.2.1

Start by reproducing the formatting with the shown click.option example on Python 3.10.11 and Click 8.2.1, then trace the help-text rendering path responsible for whitespace and line breaks. Done means the documented single-newline format is produced without requiring an extra blank line, while the existing alternatives remain correct.