References stored in deleted UProperties stick around in a Blueprint Class

UE - Gameplay - Blueprint - Apr 25, 2017

If a UProperty that stores a reference to an asset is deleted, the reference to that asset lingers in any Blueprints that had a reference stored in that UProperty. This can lead to issues when the r ...

World Partition causes client to disconnect from dedicated server

UE - World Creation - Worldbuilding Tools - World Partition - Sep 14, 2022

When using connecting to a World Partition level on a dedicated server the client get's disconnected immediately. I tested this with a non WP level and the client connected with no issues. I've inc ...

Objects animated in Sequencer fail to trigger collisions against stationary characters with character movement components

UE - Gameplay - Player Movement - Oct 22, 2024

When an object, such as a cube, is animated in sequencer and that object's path intersects a stationary character with a character movement component, the object will pass through the character with ...

Allow promote to variable on Color structs/Vertex Colors structs for Procedural Mesh components

UE - Gameplay - Oct 13, 2015

Issue: Currently, it is not possible to make a variable of type "Color" specifically for the color struct on procedural mesh components (see image attached). This is the only variable on procedura ...

Separate Translucency for Particles Breaks when Scene Color is used

UE - Graphics Features - May 12, 2015

When using Scene Color in a Particle System's Material with Separate Translucency checked true, all Particles with Separate Translucency checked true placed in the level with the Scene Color Particl ...

[CrashReport] AppleIntelBDWGraphicsGLDriver!USC::CPassSsaAllocatorContext::RollbackSpillFillToCopies()

UE - Platform - Apple - Sep 2, 2016

Error message: SEGV_MAPERR at 0x3a Source Context: Most recent user affected CL: 3106830 (4.13.0) Logs: [Link Removed] [Link Removed] [Link Removed] CrashReporter User Descriptions:UE4.13 immed ...

A Blueprint containing a Macro with a Wild Card input crashes when a Custom Event node has an additional input added

UE - Gameplay - Blueprint - Aug 16, 2022

This is a regression. Tested in //UE4/Release-4.27 CL18319896 In UE4 an error is thrown when attempting to add an input. A Blueprint containing a Macro with a Wild Card input crashes when a Custom ...

The Unreal Engine building dialog either does not appear or is only visible for a brief second

UE - Virtual Production - Nov 18, 2022

This is not a regression against 5.0. Tested in //UE5/Release-5.0 CL20979098 However, as users have pointed out, this is a departure from UE4. The same process in 4.27.2 demonstrates the building d ...

Long thin spinning objects take too long to stop spinning

UE - Simulation - Physics - Solver - Jun 5, 2023

See the SpinningObjectStability test map in the Physics Sandbox. [Link Removed] It's not clear if this is a bug or a side effect of some of our solver shortcuts (e.g., omission of the precession te ...

[CrashReport] UE4Editor_Core!FModuleManager::UnloadModule() [modulemanager.cpp:557]

UE - Foundation - Core - Feb 27, 2017

Error message: Assertion failed: ModuleInfo.Module.IsUnique() [Link Removed] [Line: 557] Source Context: Most recent user affected CL: Logs: See attached Issue call stack shares some similariti ...