Hi Karl,
I tryed to convert a tiny part of my X2 content to the new X3 gallery to check it out and so far so good.
I have a very deep tree, so I use the sidebar, one thing I have notice is when a folder contains subfolder and images, this folder can't be accessed by the sidebar.
For exemple, if you put some images in the "Setup" folder of the X3 docs, users can't reach those images with the sidebar, but if I put this URL https://www.photo.gallery/x3docs/setup/, then the images shows up.
This is something that was working on X2, if I am not wrong each click on a folder in the X2 menu loads the content of the folder and expends the menu.
Do you think this is a kind of bug or something missing?