>>/20761/
Ctrl-shift-i in firefox for example.

Actually, I just looked into code and looks like images are loaded from imgur, and default flags (hosted on endchan) are hidden by css. But at overboard original defaults are shown.

So, it is you and imgur I guess. Try to open direct links:
https://i.imgur.com/0JpSQRX.png
https://i.imgur.com/GDGr0nk.png