Issues

• Script: a struct can't use a vector or array type declared earlier in the same script

  SanderMertens/flecs#2296 · Filter by author thirdnull opened on Sep 28, 2026

• Re-entering scope of anonymous entity through variable in managed script asserts when script is updated

  bug
  SanderMertens/flecs#2295 · Filter by author b-deku opened on Sep 27, 2026

• Multiple up() terms read components from different parents

  bug
  SanderMertens/flecs#2287 · Filter by author Hammerkeg opened on Sep 11, 2026

• MSVC C2099 for log2 initializer in script math registry

  bug
  SanderMertens/flecs#2286 · Filter by author Hammerkeg opened on Sep 11, 2026

• Adding a component to an instantiated prefab aborts with ECS_ALREADY_IN_USE, which blocks live prefab editing.

  bug
  SanderMertens/flecs#2284 · Filter by author Wolftein opened on Sep 10, 2026
  1

• up|self traversal failing to combine results correctly in query for relationship

  bug
  SanderMertens/flecs#2277 · Filter by author b-deku opened on Sep 7, 2026

• Add context support to query order_by callbacks

  enhancement
  SanderMertens/flecs#2275 · Filter by author rashton-snl opened on Sep 2, 2026

• Add support for MS-DOS build

  enhancement
  SanderMertens/flecs#2271 · Filter by author dertseha opened on Aug 29, 2026
  2

• Allow ecs_entity_range_set in stage

  enhancement
  SanderMertens/flecs#2258 · Filter by author nimble0 opened on Aug 20, 2026

• Add IWYU pragma comments to internal headers

  enhancement
  SanderMertens/flecs#2257 · Filter by author palapapa opened on Aug 19, 2026

• Multi-component OnAdd observer fails to trigger for regular entity if singleton term is initialized last

  bug
  SanderMertens/flecs#2228 · Filter by author Turbohedgehog opened on Jul 18, 2026

• EntityIndexInQuery for systems (multithreaded more importantly)

  enhancement
  SanderMertens/flecs#2189 · Filter by author Lasovar opened on Jul 6, 2026

• Creating entity observer for an entity with no components

  SanderMertens/flecs#2167 · Filter by author MohammadMDSA opened on Jun 27, 2026
  1

• Infinite scroll loop in docs / navtree

  documentation
  SanderMertens/flecs#2133 · Filter by author NicoZweifel opened on Jun 11, 2026
  2

• Tick Source should be able to tick more than once per frame

  enhancement
  SanderMertens/flecs#2094 · Filter by author jknightdoeswork opened on May 14, 2026
  3

• order_by doesn't work for components used in "IsA" relationship when in query with other components

  enhancement
  SanderMertens/flecs#1902 · Filter by author Indev450 opened on Jan 2, 2026
  1

• Add FLECS_CUSTOM_BUILD support in cmake

  enhancement
  SanderMertens/flecs#1620 · Filter by author ghost opened on Apr 3, 2025

• Make component inheritance work with returning component references in queries

  enhancement
  SanderMertens/flecs#1537 · Filter by author SanderMertens opened on Jan 27, 2025
  1

• Make component inheritance work with get

  enhancement
  SanderMertens/flecs#1536 · Filter by author SanderMertens opened on Jan 27, 2025

• Improve error message thrown when cached queries are created while world is in readonly mode

  enhancement
  SanderMertens/flecs#1508 · Filter by author Indra-db opened on Jan 8, 2025
  1

• The flecs cpp API invokes ub in flecs::opaque

  bug
  SanderMertens/flecs#1417 · Filter by author Gaspard-- opened on Oct 30, 2024
  1

• Add support for component inheritance to the reflection framework

  enhancement
  SanderMertens/flecs#1345 · Filter by author morganlaowang opened on Sep 9, 2024
  4

• C++20 module support

  enhancement
  SanderMertens/flecs#1317 · Filter by author Gaspard-- opened on Aug 20, 2024
  19

• Cascade support on terms with variables

  enhancement
  SanderMertens/flecs#1276 · Filter by author farnoy opened on Jul 17, 2024
  1

• Access to a query-specific context value in ecs_order_by_action_t and/or ecs_sort_table_action_t

  enhancement
  SanderMertens/flecs#1222 · Filter by author KislyjKisel opened on Jul 1, 2024