Block4Block 2.3 patch notes:
- Now is native to Minecraft 1.19.4
- PISTON_HEAD is now breakable by spending a PISTON for b4b interactions.
- Fixed bugs that could cause a player's name to be listed multiple times under one claim.
- Phantoms now drop Phantom Elytras instead of regular Elytras. Phantom Elytras can only glide for one second at a time.
- Phantom Elytras drop more frequently than Elytras did and the drop rate of Firework Rockets from Creepers has been reduced by the same factor.
- Fixed bug introduced in v2.1 that caused copies of books to be opened and corrupted when placed on a lectern.
- Added config option to make anti freecam interact only apply to lecterns: disable-freecam-interactions-only-for-lecterns
- Grace periods for paths made with shovels can now be disabled by setting enable-path-grace-period to false.
- Added config option to hide coordinates in all messages for all players: hide-coords-globally

1.19 support:
Block for Block (no-loot-on-break list)
Frogspawn
Mangrove Wood
Mangrove Planks
Mangrove / Stairs / Slab/ Fence / Fence Gate / Door / Trapdoor
Muddy Mangrove Roots
Mud Bricks
Mud Brick / Stairs / Slab / Wall
Packed Mud
- Removed Stripped variants from no-loot-on-break so they can drop again.

Free to Break
Sculk Vein
Sculk
Mangrove Leaves
Mangrove Log
Mangrove Propagule
Mud
Mangrove Roots

Free inside Claim
Reinforced Deepslate
Sculk Catalyst
Sculk Sensor
Sculk Shrieker
Pearlescent Froglight
Verdant Froglight
Ochre Froglight
Mangrove Pressure Plate / Button / Sign

Spawn Eggs added to chicken's eggs:
Tadpole
Frog
Warden
Allay

Sculk
- Sculk cannot spread in claims.