I don't really know if this is because of SMF or a mod that I have installed.
Is there any way to run a SQL query to get rid of the whole width and height part?
Have in mind that the numbers (720 and 431) change depending on the size of the original image, and that it might have more or less digits, so I guess that some kind of wildcard should be used.
[img width=720 height=431]http://ilinktoimage.jpg[/img]
How it should look like