Thanks for looking into this more! A fix is in the works.
There's a known issue with any .website TLD, try adding this exception to your adblocker:
@@||*/pictrs/*$domain=lemmy.world
EDIT: It wasn't this- the problem has been fixed
I really considered something like tos., prequel. or even just reddit. but "old" gets the point across best.
Thank you for letting me know, it should be fixed now. Let me know if you encounter any other errors!
And we're glad to have you!
Watching Star Trek counts as self reflection and growth, right? 
...right?
OP- you are not on StarTrek.website. You're on feddit.de. When you scroll /c/Risa you are scrolling a "copy" on feddit.de.
I assure you we are fully functional.
EDIT: FWIW I checked /c/Risa on feddit.de and thumbnails loaded fine ...maybe try clearing your browser cache?
Not sure, that sounds like a backend issue. The full list of changes is here if you'd like to scan through it.
Seriously though it should fix the bug where the "context" link didn't work.
Any slowness should be gone by now, I haven't seen the JSON thing happen to me yet, but I'll look into it. Next time it happens to you can you DM me a screenshot?