Thanks for the updates. I see what you mean and have been able to replicate this on a test site. The conditions seem to be:
- a very short page
- a dropdown menu whose sub-menu items are so long that they fall below the page footer
I'll have our developers take a look and see if there's anything that can be done, considering the way the theme is structured.
As a workaround, I can suggest that instead of using a dropdown menu on Gallery, you consider adding links - perhaps a bulleted list? - to the gallery categories (floral, nature, etc.) on your gallery landing page:
Would that work for you?