Steps to Reproduce:
- Resize your browser to not use full screen. (I'm using 1440*1050)
- Go to Content -> Wiki -> Main -> FrontPage
- Click "This page is empty. Edit it to add some text."
- Click on "Write your content here..."
- Observe the add button.
Add Button is cut off even I restore the browser to 1920*1080.
Add Button display well.