EssentialsX: 2.15.0.52 (AntiBuild, XChat, XGeoIP, XProtect & XSPawn)
Paper Spigot: 1.13.1 (Build 355)
Waterfall: b227

/itemdb OR /essentials:itemdb with Birch log held in hand returns oak log

/itemdb birchlogs returns the correct entry of LOG - 17:2 and right short names.
Item identifier above the block when holding is correct:

These links are set to never expire.
The log attached shows without TreeAssist being loaded in case it conflicted. Same results both ways.
items.csv: https://pastebin.com/nBRkR8FR
config.yml: https://pastebin.com/1myA2s7m
Plugins: https://pastebin.com/hUDAfwFq
Startup Log: https://pastebin.com/t9BUkNqi

Thanks - Steve

You're running a non-1.13.x build on 1.13.1, and there are no officially supported builds that support items on 1.13.x yet.

Edit for clarification: this will be fixed as part of #2204.

Thanks for the quick reply MD - still doing testing, so wanted to make sure this was reported.

all stripped logs are registered as AIR - 0.

If you want a separate issue for each of the ones I'm finding, let me know or the # to post under. Thanks!

This will probably be every item added in 1.13, and thus not supported by the spigot compatibility layer.

yes I know. We do need to know which ones that need to be added though don't we and keeping track of what is or isn't?

Every item in 1.13.1 is at least recognised by the new system, as it uses a new database of items generated from Bukkit's list of every item in the game.

Closing as item support is now part of the 1.13 branch and experimental builds.