GPU Particle Collision causes shaking when set to bounce with low resilience.

UE - Niagara - Jul 27, 2016

A particle emitter with GPU sprites on certain settings will shake violently as they collide with the ground. This requires there to be a strong Const Acceleration module and Collision with low resi ...

If "Update Position Eash Frame" of "Skel Vert/Surf Location" is enabled, the particle continues to rotate.

UE - Niagara - May 25, 2020

It seems to have occurred since UE4.23, and the cause was the following part of "ParticleModules_Location.cpp".//From UE4.23 if (bOrientMeshEmitters) { //We have the mesh oriented to the normal o ...

LevelStreamingPersistence plugin improvements

UE - World Creation - Worldbuilding Tools - World Partition - Dec 29, 2023

UDN: [Link Removed]Fix SaveToFileCommand : [Image Removed]Problem with private properties serializing structs:[Image Removed]Add support for runtime instantiated UObject classesAdd single restore c ...

RuleProcessor is not listed in the Window menu in 5.4

UE - Editor - Workflow Systems - Jun 11, 2024

Since CL-28416011, Sections in Window menu are broken and the RuleProcessor can not be registered in the menu. (See attached imanges) Following workaround restores the sections and fixes the issue. ...

Crash When Compiling Child Blueprint Containing a Custom Event with the Same Name as its Parent's Event

UE - Gameplay - Blueprint - Feb 10, 2016

Having a child blueprint that contains a custom event with the same name as a custom even that it is calling from its parent causes the editor to crash when attempting to compile the original parent ...

[CrashReport] Crash related to mesh reimport - UE4Editor_UnrealEd!UpdateSomeLodsImportMeshData()

Tools - Jun 22, 2017

This is a common crash that occurs for users in the 4.16 release. Log file attached. Additional information is currently unavailable. User DescriptionsRandom Crash After right clicking Static mes ...

Mac project being rejected from app store over read/write access

UE - Platform - Apple - Jan 20, 2016

Game was rejected from the Mac App Store for attempting gain read/write access to directories which weren't permitted. Reporter of issue has proposed a possible fix on his AnswerHub post: These tw ...

[CrashReport] Crash related to asset export - UnFbx::FFbxExporter::FillExportOptions() [fbxmainexport.cpp:152]

Tools - Sep 28, 2017

This is a trending crash coming out of the 4.18 previews. It seems to be related to exporting assets from the editor. User DescriptionsWhen Exporting assets (static meshes) multiple times via RIGHT ...

[CrashReport] Undo crash - FD3D11DynamicRHI::RHIDrawIndexedPrimitive() [d3d11commands.cpp:1650]

UE - Graphics Features - Nov 2, 2017

This is a trending crash coming out of 4.18, although it also occurred with less frequency in 4.16 and 4.17. The callstack shares similarities to [Link Removed] and [Link Removed], and the user com ...

Unable to override private Blueprint variables in child classes

UE - Gameplay - Blueprint - Jun 16, 2022

In UE4, "Private" for Blueprint variables was misnamed: its behavior actually meant "Protected". In other words, it can't be read or written to by external objects, but it can be by derived types. A ...