Java Edition 1.15 Pre-release 1

{
 "title": "Minecraft 1.15 Pre-release 1",
 "images": [
 "1.15-pre1.jpg",
 "Java Edition 1.15 Pre-release 1.png"
 ],
 "rows": [
 {
 "field": "''(link to Java Edition article, displayed as Java Edition)''",
 "label": "(link to Edition article, displayed as Edition)"
 },
 {
 "field": "November 21, 2019",
 "label": "Release date"
 },
 {
 "field": "(link to Pre-release article, displayed as Pre-release)",
 "label": "(link to Version types article, displayed as Type)"
 },
 {
 "field": "(link to Java Edition 1.15 article, displayed as 1.15)",
 "label": "Pre-release for"
 },
 {
 "field": "[https://piston-data.mojang.com/v1/objects/6e9fe5ad18470fd1b3318f337fca18cd94d7b9e6/client.jar Client] ([https://piston-meta.mojang.com/v1/packages/66a7ddfb0ec97a0f41e0862cbf43554f67bf5592/1.15-pre1.json .json])<br />[https://piston-data.mojang.com/v1/objects/332b3382108e5bdb0b23717082c9b97c54ffc8ad/server.jar Server]",
 "label": "(link to Tutorial:Installing a version#Manual version installation article, displayed as Downloads)"
 },
 {
 "field": "[https://piston-data.mojang.com/v1/objects/03aacaabee208a109c80a04299a2f040115b0460/client.txt Client]<br />[https://piston-data.mojang.com/v1/objects/a04e21b4063b92a003786402079f6d2414b1b693/server.txt Server]",
 "label": "(link to Obfuscation map article, displayed as Obfuscation maps)"
 },
 {
 "field": "565",
 "label": "(link to Protocol version article, displayed as Protocol version)"
 },
 {
 "field": "2218",
 "label": "(link to Data version article, displayed as Data version)"
 },
 {
 "field": "5",
 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Resource pack format)</span>"
 },
 {
 "field": "5",
 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Data pack format)</span>"
 },
 {
 "field": "<span class=\"plainlinks\">[https://en.wikipedia.org/wiki/Java_version_history#Java_SE_8_.28LTS.29 Java SE 8]</span>",
 "label": "<span style=\"white-space: normal;\">Minimum Java version</span>"
 }
 ],
 "invimages": [],
 "footer": "<table style=\"margin: auto; word-break: break-word;\">\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\" >[[Java Edition 1.14.4|<span style=\"margin-right:-0.35em\">◄</span>◄  1.14.4]]</td>\n<td style=\"padding: 0.4em\">'''[[Java Edition 1.15|1.15]]'''</td>\n<td style=\"padding: 0.4em\" >[[Java Edition 1.15.1| 1.15.1 <span style=\"margin-right:-0.35em\">►</span>►]]</td>\n</tr>\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\">\n[[Java Edition 19w46b|◄  19w46b]]\n</td>\n<td style=\"padding: 0.4em\">''' 1.15 Pre-release 1'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition 1.15 Pre-Release 2| 1.15 Pre-Release 2 ►]]\n</td>\n</tr>\n</table>"
}

1.15 Pre-release 1 (known as 1.15-pre1 in the launcher) is the first pre-release for Java Edition 1.15, released on November 21, 2019,^[1] which optimizes some aspects of the game, upgrades the resource pack version, and fixes bugs.

Honey blocks

• Added unique subtitles for sliding down honey blocks; previously it used footsteps subtitles.

Dark prismarine

• Now crafted from black dye instead of ink sacs.

Scaffolding

• Increased scaffolding burn time when used as fuel in a furnace to be able to smelt 2 items, rather than 0.25.

Spawn eggs

• Zombie pigmen spawn eggs can now be used on adult zombie pigmen to spawn baby variants.

Performance

• Optimized chunk rendering.
• Optimized explosions.

Resource packs

• The resource pack version is now 5 (due to texture mechanic changes in earlier snapshots).
• The game now tries to make out of date resource packs work as much as possible.​^{[more information needed]}
  • The game can convert some of version 4 resource packs' outdated texture mechanics to the new mechanics.

UI

• Changed appearance of highlighted buttons used in options screen and similar UIs.
  • Highlighted buttons now have a white outline.
  • Highlighted buttons no longer have a blue tint on them. Instead, they are now only slightly brighter than unhighlighted buttons.

59 issues fixed

From released versions before 1.15

• MC-5336 – Bonus chest does not always spawn on 'Snowy Kingdom' preset.
• MC-12211 – Comparator in subtraction mode does not update visually under certain conditions.
• MC-14826 – Leads in unloaded chunks break, become invisible or connect to an invisible target far away.
• MC-63669 – Comparator timing issue.
• MC-77652 – Falling Block does not have uniform transparency/non-transparency in the End.
• MC-90602 – Chunks do not load correctly/not rendering.
• MC-93967 – The smoke particles of the explosion are displayed when Particles option is set to minimal.
• MC-94838 – Comparator affected through gap.
• MC-112292 – Texture for blocks using TileEntitySpecialRenderer is not bound for a short moment when entering a world and in superflat settings.
• MC-125495 – Owner tag of item entities are ignored if entity is destroyed in 200 ticks (Age >= 5800).
• MC-125511 – Item entity merging ignores Owner tag.
• MC-127005 – Bottom of waterlogged blocks shows water texture.
• MC-135110 – Crash when using outdated resource pack: Non [a-z0-9/._-] character in path of location.
• MC-146327 – Reloading resource pack unsticks held item position.
• MC-147241 – Recipe grouping pop-up is darker than it should be.
• MC-151275 – Rain and snow turns gray when picking up arrows.
• MC-161132 – Leaves are considered solid faces for block placement.
• MC-163308 – Pillagers still spawning in trees in 1.14.4.
• MC-164896 – Chests, boats, and beds are not shown behind dropped stained glass.
• MC-165524 – Zombie pigman spawn eggs used on zombie pigmen do not spawn baby zombie pigmen.

From the 1.15 development versions

• MC-160931 – 1.15 chunk rendering is slow and laggy.
• MC-161844 – Resource pack version has not been increased, despite resource packs from 1.15 snapshots being incompatible with 1.14 resource packs.
• MC-161900 – Advancement menu background is rendered in front of toasts.
• MC-163369 – Summoning a leash knot using the command is broken.
• MC-163553 – Dragon texture flickering issue.
• MC-163560 – Berry bushes no longer slow down the player.
• MC-163745 – Dramatic speed up after falling through a cobweb.
• MC-163947 – When mobs sliding down honey blocks, the subtitles will show footsteps.
• MC-163953 – /fill command does not create block entities for all bocks.
• MC-163982 – Semi-transparent entities are rendered behind clouds, transparent blocks, breaking animations, etc.
• MC-164076 – Transparent texture parts of invisible entities are rendered black when looking at them in spectator mode.
• MC-164535 – /playsound uses wrong feedback message for multiple targets.
• MC-165133 – Ignited TNT appears to offset one block to the west.
• MC-165134 – Entities are rendered too dark when in the ground.
• MC-165153 – Breaking animation no longer renders behind transparent blocks.
• MC-165154 – Entities riding boats, minecarts or other entities are rendered too dark when their hitbox intersects solid blocks.
• MC-165155 – Block hitboxes no longer render behind transparent blocks.
• MC-165156 – Transparent block items no longer render behind transparent blocks.
• MC-165173 – Bees immediately enter their nests/hives after leaving them.
• MC-165225 – Dropped items do not render behind transparent blocks.
• MC-165252 – Banners are rendered completely white when looking at them through transparent blocks.
• MC-165276 – Items held by entities do not render through transparent blocks.
• MC-165298 – Entities are rendered too dark when standing on soul sand or snow layers.
• MC-165339 – Shulker boxes do not render behind transparent blocks.
• MC-165358 – Entities are sometimes rendered too dark when changing heights.
• MC-165422 – Some player heads will only render behind tinted glass if you look at a block.
• MC-165497 – Programmer art shield pattern textures have not been updated to the new resource pack format.
• MC-165527 – Item of advancement pop up is visible on text in the advancement menu.
• MC-165531 – Conduit does not render.
• MC-165573 – Filled item frames do not show the item when viewed through glass.

From the previous development version

• MC-165605 – Command starting with / in command block shows error but still works.
• MC-165606 – "Bee Our Guest" advancement is only triggered when more than one bottle is in the players hand while right-clicking the hive.
• MC-165611 – Enchantment glint does not render in boat interior.
• MC-165627 – Falling blocks glitch through shulkers when the shulker is opening/closing.
• MC-165667 – Hitbox of entities is not rendered through transparent blocks when viewing from certain angles
• MC-165676 – Aquatic mobs do not move below sea level.
• MC-165727 – Falling blocks on top of non-full block without block below do not break.
• MC-165789 – Under certain circumstances mob body parts don't render underwater.
• MC-165876 – Sand particles do not have gravity anymore.

• Like the third to seventh pre-releases of this update, but unlike the second one, the second "r" in the version name is lowercase in-game.