Java Edition 1.15 Pre-release 4

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1.15 Pre-release 4 (known as 1.15-pre4 in the launcher) is the fourth pre-release for Java Edition 1.15, released on December 3, 2019,^[1] which fixes many issues relating to coordinate precision.

Performance

• Performance improvements.

Floating-point precision

• The floating-point precision used for the location of where certain particles and entities appear was increased to 64-bit (double-precision), from 32-bit (single-precision).
  • This fixes many issues regarding certain types of particles and entities not appearing at the right places when far away from the center of the world, especially beyond 16,777,216 (2²⁴) blocks. The following list includes instances that are known and confirmed to be fixed:
    • Particles
      • Fishing particles^[2]
      • Squid ink particles^[3]
      • End gateway particles^[4]
      • Conduit particles^[5]
      • Impact particles when entity has fallen from height on to block^[6]
      • Sweeping attack particles^[6]
      • Damage heart particles^[6]
      • Particles appearing when using the /particle command^[6]
      • Mycelium particles^[6]
      • Underwater particles^[6]
      • Nether portal particles^[6]
      • End portal particles^[6]
      • Brewing stand particles^[6]
      • Monster spawner particles^[6]
      • Barrier particles^[6]
      • Armor stand breaking particles^[6]
      • Suspended gravity affected block particles^[6]
    • Entities
      • Primed TNT entities.^[7] However, indirectly ignited TNT from other explosions is still affected.^[8]
    • Block entities
      • The floating book above placed enchanting tables is now correctly rotated towards the direction of where a nearby player is at high coordinates.^[9] However, there are still issues with the book not opening early enough.^[10]

• The versions in which these issues first appeared, as well as other fixes, can be seen at Java Edition distance effects#History.

Textures

• The checkerboard background for unfilled sections on maps now has its own texture.

22 issues fixed

From released versions before 1.15

• MC-81970 – Rotating armor stand has a shaking base plate.
• MC-103800 – Sometimes armor stands will not update their visual rotation.
• MC-125638 – Ignited TNT block has an entity offset at high coordinates.
• MC-146194 – Summon and rotation in same tick not working.
• MC-155520 – Repeaters do not update properly.
• MC-157426 – Command outputs which should be sorted do not get sorted.
• MC-161888 – Enchantment tables do not track the player correctly at high distances from the world origin.
• MC-161991 – Floating point precision error: Trailing particles from fishing lose precision at high coordinates.
• MC-161993 – Floating point precision error: Conduit particles are attracted to the conduit incorrectly at high distances.
• MC-161994 – Floating point precision error: Squid ink particles lose precision at high coordinates.
• MC-161999 – Floating point precision error: Particles emitted by end gateways gravitate to a point that loses precision at high coordinates.
• MC-166047 – Tamed wolves attack tamed parrots.

From the 1.15 development versions

• MC-161394 – Skeleton and wither skeleton skull's inside textures are invisible.
• MC-164704 – Rendering issue with honey and slime blocks when viewed from under glass.
• MC-164712 – Clouds are rendered in front of chunk borders.
• MC-165704 – Sky color no longer changes with biome.
• MC-165977 – Explosions combine block drops and drop them at the wrong location.
• MC-166300 – Pandas sometimes attack players trying to breed them.
• MC-166667 – Item frames are not rendered behind unexplored portions of maps.

From the previous development version

• MC-166716 – Tridents and shields are rendered too dark in the inventory.
• MC-166800 – Removing items from an armor stand with DisabledSlots causes a visual bug.
• MC-167000 – Player model in inventory inverts lighting when some items are in hotbar.