Hi one of my friends installed fairy lights on there technic modpack and when we use the modpack and place the fairy lights I only see the connections and light emitted but not the lights I tried reinstalling the pack but it still didnt work. This is on 1.12.2

I am having the same issue! I've been searching for ages but I have not found a solution. I am playing on 1.16.5. Also when i connect them to fence posts they work for some reason

I'm also having this problem, I'm using the Hexxit 2 modpack. They're visible on fence posts for me as well, but I can't seem to get them to work on anything else. Pennant buntings won't work either :(