Dan Mulloy

makes sense. was just wondering if you'd seen it in the listeners as well. would point to a larger issue. i'll look into this. have a few theories as to...

i was able to reproduce this and thankfully it's specific to OPEN_SIGN_EDITOR in 1.20.4. now to figure out exactly why

could you re enable the unit tests as well?

This should be fixed in build 720: https://ci.dmulloy2.net/job/ProtocolLib/lastSuccessfulBuild/

yeah it looks like item stacks no longer have nbt. it's been changed to a DataComponentMap. will need to look into this new format and see what we can do...

i am curious though...what are you trying to do with the item's NBT tags that can't be done with Bukkit's ItemMeta API?

does it still happen in 732?

That error implies that you're not setting all the necessary parameters when sending that packet. Can you provide the code you're using?

try making sure all these fields are set (from wiki.vg/protocol):  a lot of times when something works on a previous version then breaks on a newer one it's because...

it's probably not using the mojang mapped class name from paper. will check it out