Unreal Engine Issues
Unreal Engine Issues
Crash in FObjectReplicator::StartReplicating when removing replicated uproperty and hot reloading with two players
UE - Networking - May 10, 2016The editor crashes when the user removes the replicated uproperty from a variable and tries to hot reload while a PIE session with two players is still active. This issue was found while trying to ...
Project crashes in split screen when entering water body lake
UE - Graphics Tools - 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. ...
Scratch Pad outputting Audio Spectrum triggers a crash
UE - Niagara - Jun 14, 2023This is a regression. Tested in //UE5/Release-5.1 CL23901901 The editor crashes after playing in editor when the level contains a niagara system with a scratch pad outputing audio spectrum. ...
Editor crash when adding to Instanced Static Mesh Component is created/populated at runtime.
Tools - Sep 26, 2017If NewObject is used to create an instanced static mesh component at runtime, populating the component with AddInstance causes the editor to crash. Regression: Yes - repro steps provided did not cr ...
UE4Editor is crashing after user builds lighting
UE - Graphics Features - Lumen - Jul 22, 2020Issue reported by user that they are experiencing consistent crashes in UE4Editor have building lighting. ...
The engine crashes when adding a new brush at newly created level by a specific way.
UE - LD & Modeling - Modeling Tools - Mesh Editing - Jun 17, 2019issuesFBSPOps::csgAddOperation returns null if BuilderBrush has no valid polys.The creating level on content browser never calls "UEditorEngine::InitBuilderBrush(NewWorld);". But "New level" button o ...
Static Mesh Only enabled Foliage Actor causes serialization error in packaged game
UE - World Creation - Worldbuilding Tools - Nov 24, 2023The crash can be worked around by modifying FFoliageISMActor::Serialize as following code : void FFoliageISMActor::Serialize(FArchive& Ar) { #if WITH_EDITORONLY_DATA if (!Ar.IsCooking()) // ...
Crash sometimes occurs when enabling the Gravity tool on part of a Sketchfab object.
TM - Tools - May 4, 2024Current state Triggering Gravity on element from Sketchfab object's tree, may result in crash. For 100% reproduction rate, download 'Rank 3 Police Unit' object and apply Gravity to its element 'Rank ...