Image does not take full height of it container -2 column lay out

hope everyone had a great day.

I had created a 2 column layout – 1 text column, 1 image column.

The image is set to 100%, and its 2000 px 2000px. At first, it takes 100% of its container, but when I add more content to the second column (and therefor – expanding the height) – The image does not take the full height and width of its container.

I am using WordPress btw.

I attach an image – to show my example. Link to image