I often view pictures on https://www.pixiv.net/ When I select one jpg image on pixiv.net, copy this picture and then paste it to somewhere else, It becomes completely blank. And the copied image file is broken due to unknown reasons. Here I added one picture. It shows the result when I paste a said jpg image from pixiv.net to somewhere else (like a word document page). This issue happens with firefox 83 and firefox beta 84. It never happens with firefox 82. I don't know what caused this issue.