Why does expanding the frame height stretches contained images?

Why does expanding the frame height stretches the contained images?
I want to change the frame height maintaining contained images in place, but they keep stretching alongside the frame. How can I avoid this?

Hey there, thanks for reaching out!

It’s hard to be sure by the screenshot you’ve provided alone, without seeing your layers and settings. Are you able to share a link to your file so that we here in the community can take a closer look?