Issues

• BUG: World.TrimExcess drops recycled ids, new entities then reuse the id of a live entity

  genaray/Arch#315 · Filter by author lgarczyn opened on Oct 5, 2026

• ArgumentOutOfRangeException on first call to single-component batch Create<T>(amount, in T) on a fresh World (v2.1.0)

  genaray/Arch#314 · Filter by author U-Observer opened on Sep 22, 2026
  1

• Adding to the Made with Arch ECS list soon!

  genaray/Arch#312 · Filter by author TKTSWalker opened on Jul 24, 2026
  1

• Space Station 14 does not use Arch

  genaray/Arch#311 · Filter by author Aaaaa-as opened on Jul 18, 2026

• world.TryGet with ComponentType overload outs corrupted data

  bug
  genaray/Arch#304 · Filter by author Tesmi-Develop opened on Apr 19, 2026
  2

• Signature.Equals / QueryDescription.Equals use hash equality instead of value equality

  bug
  genaray/Arch#303 · Filter by author Ryan-000 opened on Mar 31, 2026
  2

• Command buffer is slow?

  genaray/Arch#301 · Filter by author metaphist opened on Jan 1, 2026

• Memory Corruption in SparseJaggedArray During High-Load Archetype Transitions

  bug
  genaray/Arch#297 · Filter by author hickagpt opened on Nov 2, 2025
  2

  

• arch event bus

  bug
  genaray/Arch#296 · Filter by author jackduang opened on Oct 29, 2025
  2

• Use interfaces and unsealed attributes for front end apis

  genaray/Arch#281 · Filter by author Shadowblitz16 opened on Jul 23, 2025

• Entity.Add does not have single component overload.

  enhancement
  genaray/Arch#280 · Filter by author Shadowblitz16 opened on Jul 23, 2025
  4

• Can unity 2021.3.30f1 use Arch?

  help wanted
  genaray/Arch#274 · Filter by author RouderSky opened on May 21, 2025
  1

• Idea for consistent component id

  enhancement
  genaray/Arch#269 · Filter by author rocktavious opened on Apr 10, 2025
  1

• Calling RemoveRange(Entity entity, Span<ComponentType> types) can break entity slot

  bug
  genaray/Arch#253 · Filter by author Orcolom opened on Jan 11, 2025
  1

• Concurrency issues with component type registration result in duplicate key exception

  bug
  genaray/Arch#239 · Filter by author immortius opened on Oct 14, 2024
  3

• Parallel queries are limited by the chunk count from using all cores.

  enhancement
  genaray/Arch#238 · Filter by author emelrad12 opened on Oct 12, 2024

• Command Buffer "Remove" leads to unexpected behaviour

  bug
  genaray/Arch#224 · Filter by author zendorx opened on Aug 1, 2024
  1

• Enabling EVENTS on other platforms

  enhancement
  genaray/Arch#204 · Filter by author nuskey8 opened on Feb 26, 2024
  9

• Event handling via generics instead of conditional compilation

  enhancement
  genaray/Arch#201 · Filter by author stanoddly opened on Feb 8, 2024
  3

• Component Lifecycle Query Filters

  enhancementpostponed
  genaray/Arch#190 · Filter by author xentripetal opened on Dec 5, 2023
  3

• Command buffer lacks non generic accesors.

  enhancement
  genaray/Arch#178 · Filter by author emelrad12 opened on Nov 24, 2023

• Entity.Set performs no checks if components exists at all to be able to set it, even in debug mode.

  enhancement
  genaray/Arch#174 · Filter by author emelrad12 opened on Nov 19, 2023
  2

• Chunk-Components

  enhancement
  genaray/Arch#170 · Filter by author genaray opened on Nov 6, 2023
  1

• AccessViolationException when serializing two worlds, but deserializing in different order

  Arch.Extendedbug
  genaray/Arch#154 · Filter by author solonrice opened on Oct 13, 2023
  10

• Dependency parallelization

  enhancement
  genaray/Arch#151 · Filter by author genaray opened on Oct 1, 2023
  5