drag the progress bar in level sequence would crash in debug editor

UE - Anim - Sequencer - Aug 17, 2023

it seems in FSequencerTimeSliderController::ComputeFrameTimeFromMouse the CursorPos is -nan ...

FXmlFile asserts on valid empty XML documents

Tools - May 5, 2016

Code asserts because it assumes that a self closing node is within another node or has another node left in the doc to parse ...

Disabling "Should Be Visible" On a Streaming Level Resets Variable Values

UE - Gameplay - Jan 6, 2017

When disabling "Should be Visible" of a stream level and then enabling it again, the values of variables in a Blueprint that has been placed in a stream level maintain their value in PIE but reset t ...

Impossible to reparent blueprint class that has a broken parent class when using compilation manager

UE - Gameplay - Blueprint Compiler - Dec 8, 2017

Alternatively use BP_ParentClassIsMissingType in QAGame ...

CachedLocalBounds is incorrectly updated

UE - Anim - Gameplay - Apr 19, 2019

USkeletalMeshComponent::CalcBounds updates CachedLocalBounds by transforming the world FBoxSphereBounds, by the WorldToLocal transform, which is not sufficient to calculate the bounds in local space ...

Animation import with "Force Front X Axis" is broken until a re-import

UE - Editor - Content Pipeline - Import and Export - Apr 24, 2019

A camera set to Orthographic projection mode with a negative Ortho Width will crash the editor on PIE

UE - Graphics Features - Jan 22, 2015

A camera set to Orthographic projection mode with a negative Ortho Width will crash the editor on PIE. Reproduced in Main (CL-2412886) Crash Report: [Link Removed] Call Stack:<unknown module>! UE ...

Repeating Cinematic loop at beginning of MatineeFightScene

Docs - Samples - Aug 18, 2016

The cinematic loops at the very beginning when opening the sample in standalone game on Mac. Cannot repro on Windows using standalone game, but can repro on Windows if you launch using -game. ...

Procedural meshes spawned at runtime cause a crash

UE - Simulation - Physics - Jan 10, 2017

When using a procedural mesh at runtime, projects fail on mobile devices. Tested on both Android Nvidia Shield and iPhone 6+. ...