Unreal Engine Issues
Unreal Engine Issues
Upgrading from 4.22 to 4.23 can break emitter inheritance
UE - Niagara - Sep 20, 2019Copied emitters will have their inheritance broken when migrating from 4.22 to 4.23. ...
Fix BinkMediaTextureResource command list crash on UE 5.6
RAD - May 23, 2025Bink MediaTextureResource assets cause a graphics API crash, due to a missing UAV flag. The Licensee has proposed a fix to add the TexCreate_UAV flag. ...
Crash occurs when an element of a fixed-size FText array is edited in a Blueprint.
UE - Gameplay - Blueprint - Jan 23, 2017The Editor can crash if a fixed-size FText array is created. Attempting to edit one of the values of the array in a Blueprint will result in a crash. ...
Changes to AActor::SetReplicates caused Role/RemoteRole replication fix to regress
UE - Networking - Jul 14, 2022There was a recent bug report that matched the description of some older cases (see linked UDN). The issue raised in those cases, [Link Removed], had been fixed, but the recent question seemed to in ...
Trying to set/change an element of a fixed-size TAssetPtr array in the Editor results in a crash.
UE - Foundation - Core - Dec 9, 2016Trying to set the value of an element of a fixed-size TAssetPtr array in the Editor results in the Editor crashing. This did not occur in 4.13. The attached callstack is from debugging the project ...
Runtime Errors appearing in Sequencer if fixed frame rate is set in projects settings
UE - Anim - Sequencer - Apr 12, 2019This ensure happens only when the Start and End of the sequence is set in the "neigborhood" of the keyframe and only if the project framerate is to be Fixed on 60FPS. If you for example play the who ...
Multiple Blueprint compilation passes required to fix up event binding to dispatcher after event rename
UE - Gameplay - Blueprint Compiler - Nov 30, 2021Renaming a custom event bound to an event dispatcher via a Create Event node requires two compilation passes to fix up the binding. upd. Regression was checked on //UE4/Release-4.26 CL 15973114, i ...
Fix AssetManager rules overrides in case PrimaryAssetTypesToScan for PrimaryAssetLabel sets bApplyRecursively=false
UE - Foundation - Data Pipeline - Cooker - Dec 11, 2023SetPrimaryAssetRules sets the "is overridden" variables (e.g. bOverrideApplyRecursively) based on a comparison with the global default rules:static FPrimaryAssetRules DefaultRules; ... ExplicitRu ...
Niagara system loses source emitters when moving Engine from 4.22 or earlier to 4.23 or later.
UE - Niagara - Nov 29, 2019The following code causes this behavior.// NiagaraSystem.cpp for (FNiagaraEmitterHandle& EmitterHandle : EmitterHandles) { EmitterHandle.ConditionalPostLoad(NiagaraVer); if (!EmitterHandl ...
Fix support for compiling editor in monolithic
UE - Foundation - Cpp Tools - UnrealBuildTool - Jul 1, 2016Some licensees have reported good results compiling the editor in monolithic configurations - startup times are noticably shorter. I believe there are a number of things that need fixing up across t ...