Until to this day the problem is still existing, uploading gif images into the description does not work.
But there is a workaround and you could ask the ChatGPT to help you with GitHub Repository Link method on how to use it if you a newbie into this kind of stuff.
Copy and paste the image address link from your GitHub into itch.io description SOLVED! so far this is the only temporary solution that works best.
This is the example of the result, copy and paste into your description like this will appeared.
