Need help troubleshooting.

A few weeks ago things changed on the backend of WP. File names showed up over the images in the media selection making it nearly impossible to see the images. And our post thumbnail editor options turned white making the checkmarks and 'crop' button basically invisible. Trying to figure out what caused this so I can get it fixed. Was it an update? is it user error (I am the content manager and we have a web guy who was making some site design refreshes recently).

side question: does anyone know how to set the image view when selecting images to their actual orientation and not the square thumbnail?