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Compiler Error on <code>#[derive(Bundle)]</code> for Generic Bundles in 0.16

A-ECSEntities, components, systems, and eventsEntities, components, systems, and events

C-BugAn unexpected or incorrect behaviorAn unexpected or incorrect behavior

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

P-RegressionFunctionality that used to work but no longer does. Add a test for this!Functionality that used to work but no longer does. Add a test for this!

S-Needs-DesignThis issue requires design work to think about how it would best be accomplishedThis issue requires design work to think about how it would best be accomplished

Status: Open.

#19470 In bevyengine/bevy;

· Zeenobit opened on Jun 2, 2025

Query as Entities

A-ECSEntities, components, systems, and eventsEntities, components, systems, and events

C-FeatureA new feature, making something new possibleA new feature, making something new possible

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

S-Ready-For-ImplementationThis issue is ready for an implementation PR. Go for it!This issue is ready for an implementation PR. Go for it!

X-ControversialThere is active debate or serious implications around merging this PRThere is active debate or serious implications around merging this PR

Status: Open.

#19454 In bevyengine/bevy;

· re0312 opened on Jun 1, 2025

Allow multiple <code>children!</code> in one bundle

A-ECSEntities, components, systems, and eventsEntities, components, systems, and events

C-UsabilityA targeted quality-of-life change that makes Bevy easier to useA targeted quality-of-life change that makes Bevy easier to use

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

S-Needs-DesignThis issue requires design work to think about how it would best be accomplishedThis issue requires design work to think about how it would best be accomplished

Status: Open.

#19398 In bevyengine/bevy;

· molikto opened on May 27, 2025

Isometric Support

A-Cross-CuttingImpacts the entire engineImpacts the entire engine

C-FeatureA new feature, making something new possibleA new feature, making something new possible

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

Status: Open.

#19247 In bevyengine/bevy;

· dcd894 opened on May 16, 2025

Rethink query / system access system to better account for <code>Allows</code> query filter

A-ECSEntities, components, systems, and eventsEntities, components, systems, and events

C-Code-QualityA section of code that is hard to understand or changeA section of code that is hard to understand or change

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

S-Needs-DesignThis issue requires design work to think about how it would best be accomplishedThis issue requires design work to think about how it would best be accomplished

Status: Open.

#19086 In bevyengine/bevy;

· alice-i-cecile opened on May 5, 2025

Type system should prevent the use of exclusive systems as observers

A-ECSEntities, components, systems, and eventsEntities, components, systems, and events

C-Code-QualityA section of code that is hard to understand or changeA section of code that is hard to understand or change

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

S-Needs-DesignThis issue requires design work to think about how it would best be accomplishedThis issue requires design work to think about how it would best be accomplished

Status: Open.

#19080 In bevyengine/bevy;

· alice-i-cecile opened on May 5, 2025

Tracking Issue: <code>no_std</code> for <code>bevy_asset</code>

A-AssetsLoad files from disk to use for things like images, models, and soundsLoad files from disk to use for things like images, models, and sounds

C-FeatureA new feature, making something new possibleA new feature, making something new possible

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

O-EmbeddedWeird hardware and no_std platformsWeird hardware and no_std platforms

S-Needs-DesignThis issue requires design work to think about how it would best be accomplishedThis issue requires design work to think about how it would best be accomplished

Status: Open.

Enhancement

#18978 In bevyengine/bevy;

· bushrat011899 opened on Apr 29, 2025

Bevy does not distinguish between "has a component" access and "read" access, leading to <code>OnRemove</code> + <code>Has</code> system param incompatibility

A-ECSEntities, components, systems, and eventsEntities, components, systems, and events

C-BugAn unexpected or incorrect behaviorAn unexpected or incorrect behavior

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

S-Needs-DesignThis issue requires design work to think about how it would best be accomplishedThis issue requires design work to think about how it would best be accomplished

Status: Open.

#18964 In bevyengine/bevy;

· tnthung opened on Apr 28, 2025

Eager system parameter validation causes issues with combinator and piped systems

A-ECSEntities, components, systems, and eventsEntities, components, systems, and events

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

S-Needs-Design-DocThis issue or PR is particularly complex, and needs an approved design doc before it can be mergedThis issue or PR is particularly complex, and needs an approved design doc before it can be merged

X-ControversialThere is active debate or serious implications around merging this PRThere is active debate or serious implications around merging this PR

Status: Open.

#18796 In bevyengine/bevy;

· alice-i-cecile opened on Apr 10, 2025

Split prepare_windows span to communicate when we're waiting for vsync

A-DiagnosticsLogging, crash handling, error reporting and performance analysisLogging, crash handling, error reporting and performance analysis

A-RenderingDrawing game state to the screenDrawing game state to the screen

C-UsabilityA targeted quality-of-life change that makes Bevy easier to useA targeted quality-of-life change that makes Bevy easier to use

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

S-Ready-For-ImplementationThis issue is ready for an implementation PR. Go for it!This issue is ready for an implementation PR. Go for it!

X-UncontroversialThis work is generally agreed uponThis work is generally agreed upon

Status: Open.

#18724 In bevyengine/bevy;

· alice-i-cecile opened on Apr 5, 2025

Accelerate wave-style spawning with the use of entity tombstoning

A-ECSEntities, components, systems, and eventsEntities, components, systems, and events

C-FeatureA new feature, making something new possibleA new feature, making something new possible

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

S-Needs-BenchmarkingThis set of changes needs performance benchmarking to double-check that they helpThis set of changes needs performance benchmarking to double-check that they help

X-ControversialThere is active debate or serious implications around merging this PRThere is active debate or serious implications around merging this PR

Status: Open.

#18697 In bevyengine/bevy;

· alice-i-cecile opened on Apr 3, 2025

using iter_descendants, query filter should apply to returned values, but not limit the walk

A-ECSEntities, components, systems, and eventsEntities, components, systems, and events

C-FeatureA new feature, making something new possibleA new feature, making something new possible

D-ComplexQuite challenging from either a design or technical perspective. Ask for help!Quite challenging from either a design or technical perspective. Ask for help!

S-Needs-DesignThis issue requires design work to think about how it would best be accomplishedThis issue requires design work to think about how it would best be accomplished

Status: Open.

#18686 In bevyengine/bevy;

· SteveAlexander opened on Apr 2, 2025