Opening a link to an image hosted on Discuit like in this test post results in a 404. Reloading the page with the 404 shows the image. Going back doesn't show the post again until reloading.
Pasting the image link into a browser directly loads the image as expected.
I had the same behavior on Android with Firefox and Chrome and on desktop with Firefox and Chromium.
Screenshots
Post with link
404 after clicking the link
Image showing after reloading the page
Image still showing after going back
The post showing up again after reloading
Opening a link to an image hosted on Discuit like in this test post results in a 404. Reloading the page with the 404 shows the image. Going back doesn't show the post again until reloading. Pasting the image link into a browser directly loads the image as expected.
I had the same behavior on Android with Firefox and Chrome and on desktop with Firefox and Chromium.
Screenshots
 Post with link  404 after clicking the link  Image showing after reloading the page  Image still showing after going back  The post showing up again after reloading