BUG: Beer pictures not displaying all the time?

Hi friends,
sometimes, beer pictures don’t load, but the new page just shows the grey tulip.

Look at this, for example. I’ve added this beer 17 days ago and uploaded the picture shortly after. The picture has shown up before. I’ve cleared my cache like three days ago.

Today it looks like this:

Now, when I click on the tulip, the right picture actually shows up:

It also shows up in the search:

Is this because of browser settings? I can’t imagine, as I’ve cleared my cache and all saved data just days ago, as stated above.

I get this too, on multiple devices. I assume it’s just a problem with the site.