I think the template in the composer is generally not a 100% reliable option. The same issue occurs when you initially select a category, enter text, and then change the category to one with a template. So when you reply as a linked topic, which adds the link to the other topic to the composer, and change the category, you won’t see the template either. And when you post in the wrong category and the topic is moved to a different category, you also don’t know that there is a template.