Activity not displaying all three columns properly after attaching image

It has happened again on three other activities. It seems to happen with the same user who is using an ipad tablet.

The images are being taken from an iPad and when I test it, it does not upload correctly. If I upload another different image the attachment works fine. I am attached the image that seems to always create the problem. Please help.

There has to be a problem with the image. Have a look at this video of how the upload of the image behaves.
www.dropbox.com/s/vgpgghx19yxqj09/attach...m_withimage.mp4?dl=0

About the questions

Possibly it comes from how the user adds the image.

I tried it on my PC and while it does not corrupt the entire activity the upload of the image behaves in an unusual way. See video

Could you give hints abot the way the image is added to the item ?

I watched him upload the image and he uses the attachment feature the same way as you would expect. There is nothing wrong with the way he is uploading as even when I test it on my computer a problem occurs. Yet when I use another image on my computer it behaves correctly.

Could the user try and add an image on some ticket on Demo with his iPad ?

What do you mean by Demo? What is this where is it?