Symfony version(s) affected

5.4+

Description

When I use \n in the label of a transition, the PNG file generated from the PUML file shows text with and without the color applied.

Using quotes breaks the generation of the PNG image, but it may be the expected behaviour of the YAML Component.

How to reproduce

                symfony_test:
                    from: [pending, created, scheduled]
                    to: courierconfirmed
                    metadata:
                        color: 'DarkGreen'
                        arrow_color: 'DarkGreen'
                        label: "Lorem ipsum\n(hey)"

Here is the result:

Possible Solution

Close the <font> tag before \n and reopen it after that new line.

Additional Context

See also #49174