On screen the 'title' of an expand macro is the same size as the rest of the body text.
In the PDF export it is heading sized. See the attached PDF for an example.
We use this macro frequently in our own documentation and I would imagine our customers do too. I see this issue as on the verge of critical.
- Install the Confluence Source Editor plugin (this will place a <> icon on the top-right of the editor when editing a page
- Enclose your macro within a div of the wiki-content class:
Add the following line right before <ac:macro ac:name="expand">
and this line after the closing tag of the expand macro (</ac:macro>):