Moving image in wp editor breaks it

Hi!

I have a problem when i try to move already added image by dragging it to a different section in article/page. If I do this, WordPress breaks the url of the image and because of that the image disappears from the article/page.
I noticed that when i move the image in the editor by dragging it the src of the img tag starts with “../wp-content/”. Before moving image it started as “https://www.mydomain.com/wp-content/”.
I also tried this with fresh WordPress 3.0.1 installation and same thing happens every time.
Any idea how to fix this?