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submitted 1 year ago by misterdoctor@lemmy.world to c/memes@lemmy.ml

Alt text: a picture of Spider-Man looking at a wall with the caption, “Everywhere I go, I see his face”. On the wall is a picture of the profile page for Lemmy user the_picard_maneuver.

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You do? Hmm, that's strange... I'm uploading everything through Lemmy directly and haven't been hosting off site.

When I switch to my .world account, it doesn't appear that way to me either. Could anyone more technical take a stab at what might be happening?

[-] xusontha@ls.buckodr.ink 10 points 1 year ago

The problem is something to do with startrek.website, but it only affects the default UI (Lemmy-UI). I've seen it on a large number of images uploaded on startrek.website but viewed on another instance. It doesn't seem to affect files uploaded to external websites though

[-] xthexder@l.sw0.com 9 points 1 year ago* (last edited 1 year ago)

I think it's something about HTTP cross-origin headers that they've configured incorrectly. I'll have to confirm later when I'm on a desktop browser.

Edit: It's actually uBlock Origin blocking the images from loading! There's a rule in EasyList that is matching *.website (it's a lot more complicated of a rule, but that's the gist). It blocks it unless it's coming from one of a few whitelisted pages like lemmy.world.

I found a workaround mentioned here: https://lemm.ee/comment/3068996

[-] xusontha@ls.buckodr.ink 2 points 1 year ago* (last edited 1 year ago)

That's more complex than I understand so I'll take your word lol

All I know is instances have what look to be old links to media that gets fixed whenever you clear cache

[-] Sotuanduso@lemm.ee 2 points 1 year ago

Yeah, that's what I suspect too.

Oh interesting... Yeah, I mostly post from Liftoff or Voyager on my phone, so I wouldn't have noticed.

I wonder if the startrek.website admins are aware of the inconsistency.

[-] xusontha@ls.buckodr.ink 3 points 1 year ago

I think I mentioned it to one of them, but I don't know if they know the extent or if they're just working on it

[-] Hobbes@startrek.website 6 points 1 year ago

No issues for me. Using Memmy.

[-] Mr_Buscemi@lemmy.blahaj.zone 6 points 1 year ago

Doesn't cause it on the sync app for me. All your uploads show up without a website.

[-] odium@programming.dev 5 points 1 year ago

No issues on Jerboa

[-] AhismaMiasma@lemm.ee 3 points 1 year ago

Clearing my Firefox cache after adding lemm.ee and startrek.website to my uBlock whitelist fixed the issue. Now I can see your wonderful posts easier!

[-] Sotuanduso@lemm.ee 3 points 1 year ago

I assumed it was something to do with lemm.ee's policy with federating images to protect against CP attacks, since everyone else who says they're having trouble is also from lemm.ee. I think what they're doing is just linking to the other instances' images directly, and maybe startrek.website doesn't like that?

I can see your lemmy.world account's posts just fine.

That might be it. On top of not federating images, I know that Lemm.ee has file size restrictions for its users too (to reduce load and keep things fast, I think), so maybe there's something related to that as well.

this post was submitted on 23 Sep 2023
581 points (96.5% liked)

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