Here are the steps to reproduce:
- Add an SO site
- Go to the site's wiki page
- Click on the FrontPage's info message to add text
- Select either Creole or MediaWiki
- Click "Show Syntax Help" if Syntax help is not already being displayed
The Syntax help by default will display properly alongside the text field as in portal wiki.
The Syntax help by default will either be too close to the text field (Creole) or will be overlapped slightly by the text field (MediaWiki)
See attached images for comparisons between Portal and SO wikis. The workaround is readjust the text field.