Images won't show up every time when drag&drop them onto Pahvi

[0is1]

Sometimes an image won't show up on the Pahvi when drag&drop it, but you can still see the "Image Box" in Layers-menu. If you reload the page the image will show up.

It seems to happen only with .jpg-files when you try to add image after reload of the page.

If you drag&drop two .jpg-images -> second image will show up but the first one doesn't until you reload the page.