Some fractured meshes do not retain their original normals after fracture

UE - Simulation - Physics - Destruction - May 6, 2022

Fractured meshes with weird Normals/Reflections. You will see weird normals / reflections on the surface, seems each fracture piece has it's own reflection angle. Repro rate: 3/3 Tested this in // ...

Geometry Collection crashing BP Simulation when set to enable Physics via Event Graph

UE - Simulation - Physics - Destruction - Dec 2, 2022

Reproduced 3/3 times, issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. Issue does not occur when user Simulates in level viewport, nor when geometry collecti ...

MAC: Crash on startup

UE - Platform - Apple - Apr 10, 2015

"MacBook pro 13 2015 with yosemite 10.10.3 just crashed after launching ue4." The problem is that the recently introduced calls to IsRHIDeviceNVIDIA occur before the Mac code sets the GRHIVendorID ...

[CrashReport] UE4Editor-Kismet.dylib!FTabInfo::OnMouseDownHisory(FGeometry const&, FPointerEvent const&, TWeakPtr<SMenuAnchor,()

UE - Platform - Apple - Jul 20, 2017

This is a common crash affecting Mac users in 4.16. It has occurred since at least 4.13 ...

Imposter renders incorrectly in PCG volume after updating to 5.4

UE - World Creation - Procedural Tools - PCG Component - Jun 27, 2024

The last level of impostors in PCG volumes render incorrectly after updating from 5.3 to 5.4. ...

Warning on compiling Sub Anim Instance node with connection to exposed variable

OLD - Anim - Oct 10, 2017

When compiling an animBP with a Sub Anim Instance node with a connection to an exposed variable, warning will be displayed. When there is no connection to the Sub Anim Instance node, no warning wi ...

Engine crash from opening level bounds blueprint after project reopens

UE - Gameplay - Blueprint - Jun 2, 2017

There is a crash that is occurring when a blueprint with the parent of "Level Bounds". The crash occurs when the project is closed and reopened. Opening the blueprint immediately after it was create ...

Audio Components ignoring Start Time set by Play node

UE - Audio - Jun 22, 2018

The Audio Component play with no delay despite there being a wait time being passed in the Play node. This was found in 4.19.2 (CL - 4033788) and tested in 4.18.3 (CL - 3832480), 4.20 Preview 3 ( ...

Alpha Channel Created when 'Accumulator Includes Alpha' is Disabled in MRQ

UE - Anim - Sequencer - MRQ - Apr 12, 2022

Occurs 3/3 times Alpha Channel Created when 'Accumulator Includes Alpha' is Disabled in MRQ issue discovered in LiveQA, and appears related to FORT-451157 Note: Whether 'Accumulator Includes Alpha ...

Crash Occurs In Skeletal Mesh Editor When Adding a Bone Transform in a New Animation Sequence

UE - Anim - Runtime - Apr 22, 2022

Occurs 3/3 times Regression does occur: tested in //UE4/Release-4.27.2  EGL Live @ CL 18319896. No crash occurred.  A crash occurs in the Skeletal Mesh Editor when adding a bone transform to the A ...