Missing fullscreen button or link in some textarea properties in object editor

Reproduction steps:

• Login with Admin user
• Go to http://localhost:8080/xwiki/bin/view/Panels/Children
• Start editing with object editor
• Check the description and content properties

Expected result:

• both editors have a button to put the editors in fullscreen or at least a link

Obtained result:

• the editors are missing capability to be put in fullscreen