Hah! At the moment I read "at that very moment", I got a popup from Chrome's PDF reader in the background tab I loaded the article in: "Some slides have failed

Hah! At the moment I read "at that very moment", I got a popup from Chrome's PDF reader in the background tab I loaded the article in: "Some slides have failed to load and may appear blank. Click OK to try reloading the presentation, or cancel to continue viewing." So Chrome hasn't completely ridded itself of modal popups just yet, though it's happens infrequently enough that I was pretty surprised.