While testing the v2.0 Active Choices patch, I realized that HTML in Active Choices parameter description that used to render correctly with v1.5.3 and Jenkins 2.19 no longer does. This happens even when Jenkins security is set to 'safe HTML' and the HTML is something as simple as a an HTML header in the parameter description. When the parameter is rendered the HTML is 'sanitized' i.e. renders just like text.