The only thing I’ve heard of fixing this was something they mentioned on their Mastodon, but it looks like you may have already done that with the adding a rule thing. Adding it here just in case it’s different than what was in the FAQ or for others who may have the same issue and this does fix.
@Treksite on Mastodon said:
Are you visiting StarTrek.website communities from another instance and having trouble with images loading improperly?
Add this exception to your adblocker (replace “lemmy.world” with your instance):
@@||*/pictrs/*$domain=lemmy.world
Hey @xusontha, ol buddy ol pal, what did you do that ended up fixing your issue?