Hi,
Thanks for the question!
You're right. Highcharts renders these labels as SVGs and for
<text> wrapping works a little different than in HTML.
Highcharts does not wrap a long word like that, but allows you to break it/wrap it in a certain place by just adding
<br>.
Here's a
demo: http://jsfiddle.net/BlackLabel/ekvwpd4n/
Let me know if that helps.
Best regards,
Jakub