Most things when editing for mobile typically work the same in the desktop editor and even when viewing from the mobile device. However some things may not work the same, they may function differently in technical terms and so the outcome may be a little different from what you may expect.
The things that don't work is simply due to the lack of flexibility when it comes to comparing the usage on a PC or Laptop as to a mobile device, such as a Smart Phone or Tablet. The different devices do not work the same and are all built together differently for multiple reasons.
Like a Smart Phone or Tablet do not have a controllable mouse, you control things through the touch screen which does not operate the same as using a mouse and keyboard on a computer.
Currently Disabled Functions
Being able to use a full-screen popup on a mobile is currently disabled due to the size of the popup you may have created on the desktop simply being too large to fit onto a Mobile view.
If you have imported a video and on the desktop version you have enabled the setting to autoplay the video, then, unfortunately, this will not work on a mobile device, simply due to software compatibility that does not allow things such as videos to be force played without the user's input.
Sometimes using the same elements you’ve used in the desktop version just doesn’t work. You can then just add new elements to the mobile version. These elements won’t be visible in the desktop version of the page.
Scenes don’t work the same on mobile devices. They are displayed under each other. This can be seen in the preview window or in the published publication. A page with multiple scenes will become one long scrolling page.
The links on elements or groups are removed in the mobile version. New links have to be made when using elements from the screen version. Creating a link will work the same in the mobile editor as it does in the desktop editor.
Keep in mind that hover effects & actions don’t work in the mobile view, because these devices have a touchscreen.