Image keeps random shrinking

Hey all,

I keep on experiencing something weird with my images. At random moments they shrink. When I edit anything about them, they look alright for like a second, but then they will shrink again. I have no idea what is causing this. Can anyone help me figure this out? It happens in the designer as well as on the published site. I’ll attach some images to clarify as well as he read only link.

How it should be:

What it changes into:

Thanks already!

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

Command + shift + I doens’t fix it either. :upside_down_face: