I have been linking some file previews to pages within Canvas modules. At first, it worked very well, and there were no issues. However, a week later, when I click on the links, while it does seem to transport me to the file section of Canvas, there is no longer a pop up window showing the document that I was file previewing. When I copy paste the link that I have in my URL bar, it works. I'm not really sure what's happening, but I would ideally like the pop-up window with file preview to come up every time. Is there something that I am doing wrong?