It is on Windows 10 and the latest versions of Chrome and Edge.
We have discovered on curious thing – it seems to include the image in frame three. We changed the image and the problem went away, we now tried to change back and the problem appeared again. And I can’t find anything strange with that image! There is nothing strange with the name (there are other images named .jpeg and they work), no strange characters, it has the same size and dpi av the rest of them…