Problem with forum edit and image

There is a problem with forum function

We can't edit post (at least, we can, it shows "edited", but the modifications we did doesn't shows on the post then)
Also, when editing, we can't add more image

Lastly, and that combine with last thing, when we reply we can't share images. So, for example, if we need to sent more than 5 images to explain some bugs, we can't unless we upload the image to some external services, but we won't be able even to do this adding a reply to the same post