• This issue is not solved in a development build (Using 5.1.1-Snapshot)

Describe the bug
I am not sure if this is a bug or I am just very stupid.
I am creating a packetwrapper for SCOREBOARD_DISPLAY_OBJECTIVE and while trying to set the position (list, sidebar, belowName)
I get the following error

com.comphenix.protocol.reflect.FieldAccessException: Field index 0 is out of bounds for length 0
at com.comphenix.protocol.reflect.FieldAccessException.fromFormat(FieldAccessException.java:49) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.reflect.StructureModifier.write(StructureModifier.java:316) ~[ProtocolLib.jar:?]
at me.wasn325.coreapi.core.packets.WrapperPlayServerScoreboardDisplayObjective.setPosition(WrapperPlayServerScoreboardDisplayObjective.java:51) ~[coreapi.jar:?]

To Reproduce
Steps to reproduce the behavior:

https://github.com/dmulloy2/PacketWrapper/blob/master/PacketWrapper/src/main/java/com/comphenix/packetwrapper/WrapperPlayServerScoreboardDisplayObjective.java#L55
This wrapper has almost the same structure as mine and should work for demonstrating (the problematic line is already marked)

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
I am not sure if this is possible, as the problem occurs before the scoreboard is finish and is visible to the Players

Version Info
ProtocolLib Dump
Timestamp: 11/07/23 18:36:08

ProtocolLib Version: ProtocolLib v5.1.1-SNAPSHOT-669
Bukkit Version: Unknown-Version
Server Version: git-Purpur-"f24e535" (MC: 1.20.2)
Java Version: 17.0.8

ProtocolLib: com.comphenix.protocol.ProtocolLib@3f8ffeec[
statistics=com.comphenix.protocol.metrics.Statistics@5cc602f1
packetTask=com.comphenix.protocol.scheduler.DefaultTask@5463c22c
tickCounter=1409118
configExpectedMod=1
updater=com.comphenix.protocol.updater.SpigotUpdater@2e37f40b
redirectHandler=com.comphenix.protocol.ProtocolLib$2@6e0f07bf
scheduler=com.comphenix.protocol.scheduler.DefaultScheduler@2324105
commandProtocol=com.comphenix.protocol.CommandProtocol@480a91cd
commandPacket=com.comphenix.protocol.CommandPacket@598ca36b
commandFilter=com.comphenix.protocol.CommandFilter@4f28651a
packetLogging=com.comphenix.protocol.PacketLogging@5f822f93
skipDisable=false
isEnabled=true
loader=io.papermc.paper.plugin.manager.DummyBukkitPluginLoader@431a5957
server=CraftServer{serverName=Purpur,serverVersion=git-Purpur-"f24e535",minecraftVersion=1.20.2}
file=plugins/ProtocolLib.jar
description=org.bukkit.plugin.PluginDescriptionFile@7fb13da4
pluginMeta=org.bukkit.plugin.PluginDescriptionFile@7fb13da4
dataFolder=plugins/ProtocolLib
classLoader=PluginClassLoader{plugin=ProtocolLib v5.1.1-SNAPSHOT-669, pluginEnabled=true, url=plugins/ProtocolLib.jar}
naggable=true
newConfig=YamlConfiguration[path='', root='YamlConfiguration']
configFile=plugins/ProtocolLib/config.yml
logger=com.destroystokyo.paper.utils.PaperPluginLogger@3d8dd0be
]
Manager: com.comphenix.protocol.injector.PacketFilterManager@2cccf6b9[
plugin=ProtocolLib v5.1.1-SNAPSHOT-669
server=CraftServer{serverName=Purpur,serverVersion=git-Purpur-"f24e535",minecraftVersion=1.20.2}
reporter=com.comphenix.protocol.ProtocolLib$1@5a66b299
minecraftVersion=(MC: 1.20.2)
asyncFilterManager=com.comphenix.protocol.async.AsyncFilterManager@457bc447
pluginVerifier=com.comphenix.protocol.injector.PluginVerifier@16a0f476
inboundListeners=com.comphenix.protocol.injector.SortedPacketListenerList@5d92b125
outboundListeners=com.comphenix.protocol.injector.SortedPacketListenerList@328f3274
registeredListeners=[PacketAdapter[plugin=CoreAPI, sending=ListeningWhitelist[priority=NORMAL, packets=[PLAYER_INFO[class=ClientboundPlayerInfoUpdatePacket, id=60]], gamephase=PLAYING, options=[]], receiving=EMPTY_WHITELIST], PacketAdapter[plugin=CoreAPI, sending=ListeningWhitelist[priority=NORMAL, packets=[SCOREBOARD_TEAM[class=PacketPlayOutScoreboardTeam, id=92]], gamephase=PLAYING, options=[]], receiving=EMPTY_WHITELIST], PacketAdapter[plugin=CoreAPI, sending=ListeningWhitelist[priority=NORMAL, packets=[NAMED_ENTITY_SPAWN[PLAY, SERVER, 235, classNames: [net.minecraft.network.protocol.game.PacketPlayOutNamedEntitySpawn, net.minecraft.network.protocol.game.ClientboundNamedEntitySpawnPacket, net.minecraft.network.play.server.SPacketSpawnPlayer] (unregistered)]], gamephase=PLAYING, options=[]], receiving=EMPTY_WHITELIST], PacketAdapter[plugin=CoreAPI, sending=EMPTY_WHITELIST, receiving=ListeningWhitelist[priority=NORMAL, packets=[TAB_COMPLETE[class=PacketPlayInTabComplete, id=10]], gamephase=PLAYING, options=[]]]]
packetInjector=com.comphenix.protocol.injector.netty.manager.NetworkManagerPacketInjector@29cd819e
playerInjectionHandler=com.comphenix.protocol.injector.netty.manager.NetworkManagerPlayerInjector@38dfd395
networkManagerInjector=com.comphenix.protocol.injector.netty.manager.NetworkManagerInjector@700c4632
debug=false
closed=false
injected=true
]

In 1.20.2 an enum (DisplaySlot) is used for the position instead of an integer, I added a wrapper for it in #2819

Can confirm this issue in build 673, have the same issue.