Page Partially Won't Display Depending on Zoom

So, when I am all the way zoomed out on a page, everything will display just fine. But when I zoom in, sometimes some portion of the image, always along the edge, won't display. It will just show grey, as if the image isn't fully loading. But zoom out, and bam, there it is. Any idea what's causing this and how to fix it? I'd like to be able to see all of my page, after all.

This sounds like a display bug that was recently reported as fixed. I'd suggest sending a game link along with the map and zoom in question, along with the name of your browser in a  Help Center Request . I'm sure the devs would like a look-see. A Console Log ( Chrome ,  Firefox ) in the report might help if you are so inclined.