Repeating group acting up

My repeating groups are really acting up right now. I have never seen this before - why does it do it?

I just made a regular repeating group with 4 rows and 4 columns. Each cell displaying an image from a list.

This i what i looks like?!

And when i start manuvering around with the image in a cell and change the size, it stops working completely on me. Why ?

Check responsive setting and min size of cell