Crash upon launching packaged game with nativized blueprints that include Add Child Actor Component node with a class already set

UE - Gameplay - Blueprint - Jun 14, 2017

When using the Add Child Actor Component node with a class set on the node with Blueprint Nativization enabled, the packaged game crashes upon launch. A workaround for this is to leave the class bla ...

[MetaSounds] - Changing an Input to Modulation Parameter crashes editor due to module load order

UE - Audio - MetaSounds - May 27, 2022

Setting an Input type on Modulation Parameter crashes the editor with:Assertion failed: Pair != nullptr [File:E:\SMoyls_UE5_Release-5.0\Engine\Source\Runtime\Core\Public\Containers\Map.h] [Line: 643 ...

Shaders are compiled for Engine on first launch after fresh download

UE - Foundation - Build - Rocket (Installed Engine) - Dec 21, 2016

Engine DDC doesn't appear to be included with fresh install of 4.15 Engine. Upon launching editor for first time, ShaderCompileWorker Process startup and user gets notification shaders are compili ...

GetStaticMeshViewport() is called without checking if it returns a valid viewport causing the Editor to crash

UE - Editor - Dec 9, 2021

This is not a regression. Tested in: //UE4/Release-4.27 CL18319896 Binary //UE5/Release-5.0-EarlyAccess CL16682836 Binary //UE5/Release-5.0 CL18407655 Personal P4 When opening a static mesh without ...

DeltaTime returns inaccurate time when Tick Interval is positive

UE - Gameplay - May 30, 2017

When disabling/enabling tick at runtime, if (TickInterval == 0) then DeltaTime returns as the length of a frame, but if (TickInterval > 0) DeltaTime returns as the length between when tick was disab ...

USkinnedMeshComponent::PredictedLODLevel can be set below MinLOD

UE - Anim - Rigging - Aug 12, 2019

 Within USkinnedMeshComponent::UpdateLODStatus_Internal, if the USkinnedMeshComponent does not yet have a MeshObject, MaxLODIndex will be left as 0 and as a result PredictedLODLevel will be set to 0 ...

Crash when deleting BindingOverrides if the target property is left open on the details panel

UE - Anim - Sequencer - Sep 22, 2023

Crash if opening ALevelSequenceActor::BindingOverrides in the details panel and run a process that empties the BindingOverrides elements. Workaround: FMovieSceneObjectBindingID FMovieSceneObjectBi ...

Ensure condition failed: PrimitiveComponent tried to render with Material MaterialInstanceDynamic, which was not present in the component's GetUsedMaterials results

UE - LD & Modeling - Terrain - Landscape - Feb 22, 2017

Top 10 ensure in 4.15. There was a fix submitted for [Link Removed] which was verified as following those steps to reproduce no longer causes this. ...

MatineeFightScene too dark due to tonemapperfilm changes

Docs - Samples - Jan 31, 2017

MatineeFightScene is heavily dependent on the old Film settings in the tonemapper. Since 4.15 made changes to this, the scene is extremely dark. The project needs r.TonemapperFilm=0 added so that i ...

Warning: repairing painted vertex colors due to static mesh re-imports! in ContentExamples

Docs - Samples - May 4, 2017

Not a regressionInfo Repaired painted vertex colors in 0.0s for 2 components in /Game/Maps/Leveldesign_Workflow. Resave map to fix. Warning Spent 0.0s repairing painted vertex colors due to stati ...