Indeed, I was able to replicate on a fresh incognito tab.
I managed to find the roo cause of the issue, it is a custom CSS style, check this screenshot: https://i.imgur.com/mcgZQg5.png
It sets the background image to “none” for every element, which does not contain a class name of “w3_bg”. After further isnpection it is coming from this style rule: https://i.imgur.com/IMflEbi.png
It is probably added by W3 Total cache plugin. Check the lazy loader feature and either turn it off, or add the “asp_image” DOM class name to the exceptions list.
