I notice this:
- in the first one, i have the possibility to hide content and the sidebar between "hide button" and "social button" is transparent;
- in the second one, no hide button but still transparent
- in the third one, no hide button and no transparence…
- the only thing i noticed is that the first page use the default photos (4 in a row)
- the other two pages have, each of them, a single photo as background…
- maybe the hide button appears only when is recalled the default gallery set in preference?
- and why the difference between second and third page?