I created a Markdown File using the Markdown Editor and included images with the insert-images Button. The images are from a Nextcloud Folder. This works fine and I see the images on my Laptop.
But when I open the file with the Nextcloud Android App no images are shown (only the filename).
I cam across the same issue. Just a placeholder is shown. If one clicks on it the user has to log-in instead of just showing the image as if one would have selected it from the file view.