Should I be able to see the galleries on the edit with Elementor page ? I only see the code – it does not populate on the edit page – but works fine when viewed.
While you should be able to see the galleries, the reasons why you cannot may be many.
One possible reason is that I lazy-load scripts. So, a page or post will include Photonic’s JS only if it has a Photonic gallery. Maybe what is happening with the page in Elementor – the scripts are not included by default, so the gallery might not be rendering. Do you see the gallery if you are editing a page with Photonic galleries (instead of creating a gallery in a page with no other galleries)?
Another possibility is that there might be some sort of a JS conflict with a different plugin in the back-end, which is preventing the gallery from rendering. The conflict might not exist on the front-end, which is why things render fine there.