Hi,
when clicking the Share button no fields for the target users or the message shows up, as explained in the Atlassian's "share a page or blog post". The theme being applied is the default and we have no custom HTML, styles or JS.
What shows up:

Versus what is expected:

We are using Confluence 6.4.2 and it happens in all browsers.
Did anyone have this situation already, and/or know how to solve it (and what may be the cause)?
Thank you.