Unreal Engine Issues
Unreal Engine Issues
Assert when adding geometry cache asset as a component to a blueprint actor
UE - Editor - Content Pipeline - Import and Export - Mar 24, 2021When adding an asset directly to a blueprint, it is not in the streaming components, so the assertion fails when setting the geometry cache. ...
Animation System relies on FindFunctionByName which is not thread safe.
OLD - Anim - Mar 29, 2017Currently, there are several places in FAnimInstanceProxy and FAnimNode_Base (and derived classes) that rely on FindFunctionByName in order to resolve transitions, evaluate pins, etc. This can happ ...
Crash accessing USplineComponent from Niagara while it is being updated on game thread
UE - Niagara - Aug 13, 2020I was working with a licensee on something unrelated, and ran into this niagara threading crash. It looks like UNiagaraDataInterfaceSpline::SampleSplinePositionByUnitDistance on one of the niagara h ...
Importing .glb file results in crash
UE - Editor - Content Pipeline - Import and Export - Nov 13, 2019When importing a .glb file from Blender, the editor crashes. The user has been able to import other .glb files, but ran into an issue with the one provided being unable to be imported. ...
Vehicle using Async Scene Crash
UE - Simulation - Physics - Nov 6, 2018Setting a Vehicle to Asynchronous physics will cause a crash. Confirmed in 4.22 Main at CL 4542756 ...
GAS: GameplayCueNotify OnActive executed twice for Duration GEs on Standalone+ListenServer
UE - Gameplay - Gameplay Ability System - Aug 2, 2023When playing Standalone or as Listen Server, whenever a GameplayEffect with a duration is applied that fires gameplay cues, the server will locally execute OnActive twice on GameplayCueNotify_Actors ...
BP - Exclusive nativization will fail at cook time if an Actor BP class enabled for nativization includes a Component BP that's not enabled for nativization in its component list.
UE - Gameplay - Blueprint - Apr 26, 2017This happens because the Blueprinted component is not also enabled for nativization, but the nativized Actor BP tries to use it as a native class type. Current workaround: Ensure that the Blueprint ...
Project crashes in split screen when entering water body lake
UE - LD & Modeling - Terrain - Water - Dec 8, 2021When creating a landscape with a waterbody lake. The engine will crash when in split screen when the player enters the water. This is not regression, it is occurring in 4.26. ...
Managed particle systems can fail to be removed from managed ticking when pending registration
UE - Niagara - Mar 31, 2021UParticleSystemComponent::SetComponentTickEnabled can fail to disable ticking due to IsTickedManaged not checking if the particles system is pending registration. The crash was in part because of c ...
Crash when adding a camera to shot track if a player track has been added
UE - Anim - Sequencer - May 9, 2016If the user creates a new sequencer for the level that includes the player character and a shot track the editor will crash if a new camera is set as the camera for the shot track. ...