The Bug:
Searching "Skulk" in the Creative 'Search Items' tab brings up nothing
Reproduction Steps:
Open any 1.19-rc2 world and try searching for "Skulk" in the Creative 'Search Items' tab. Nothing will show up in the list.
MC-252442
Searching the word "Skulk" in the Creative 'Search Items' tab brings up nothing
Resolved
Invalid
0
That is because the items are not called "skulk", but "sculk", with a C.