Image and Slider editing window is a white rectangle

Today, I added an image to my home page slider. After clicking update the image editing window turned all white or appears to be covered by a white rectangle. In the media library, I can see all my images, but when I click an image to edit it, I get this white rectangle which appears to be covering the editor or the editor is not loading completely. For images that are part of a slider, I can see the edges of some blue buttons on the right edge of the white rectangle, which say “slide”. For images not in a slider, there is just a white rectangle.