Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor_SlateCore!SWindow::IsVisible() [swindow.cpp:1320]
Tools - Oct 12, 2017This is a trending crash coming out of the 4.18 previews and 4.18.0. The callstack is similar to a Mac crash that was fixed in 4.16.2 - [Link Removed] User Descriptionswas testing 3rd person temp ...
Native variable references like GameplayAttribute cannot be searched by "Find in Blueprints" or "Asset Search"
UE - Framework - Blueprint Editor - Jan 4, 2023"Find in Blueprints" does not turn up results when searching a GameplayAttribute by name, even when there is a GameplayEffect blueprint that has a modifier for that GameplayAttribute. This is becau ...
UNetDriver server-side hitch results in ActorInfo->NextUpdateTime far into future
UE - Networking - Feb 16, 2024A high UWorld::Tick DeltaSeconds (i.e. GameThread hitch) results in a high UNetDriver::TickFlush DeltaSeconds. This DeltaSeconds can high (many seconds) if the hitch is long. This value then affects ...
Sub-world partitions do not properly handle partial editor loading as world partition standalone level instances' spatially loaded actors do not get loaded even when the Level Instance is force loaded or loaded in by region.
UE - World Creation - Worldbuilding Tools - World Partition - Aug 19, 2025Context Level Instancing is a level-based workflow designed to improve and streamline the level editing experience. In a standalone Level Behavior, when the Level Instance Actor is loaded through it ...
Matinee doesn't display animated SkeletalMesh if its origin is out of view
UE - Anim - Sequencer - Jan 23, 2015From 8/17/16 Tools sync: This is probably also happening in Sequencer. Think Sequencer should just auto-set this flag. ----------------------------------- If a SkeletalMesh actor is placed beyond v ...
Crash when using Set Collision Response on a Destructible component
UE - Simulation - Physics - Destruction - Dec 20, 2016Crash when using Set Collision Response on a Destructible component. The repro is using the Construction Script but this also happens using Event Begin Play in the Event Graph on play. It crashing ...
[CrashReport] Crash related to mesh reimport - UE4Editor_UnrealEd!UpdateSomeLodsImportMeshData()
Tools - Jun 22, 2017This is a common crash that occurs for users in the 4.16 release. Log file attached. Additional information is currently unavailable. User DescriptionsRandom Crash After right clicking Static mes ...
Editor Crashes on Opening After Deriving C++ Class from Another Class
UE - Foundation - Cpp Tools - Hot Reload - Sep 13, 2017After deriving a C++ class from another class and then closing the editor, the project will crash when reopened. This crash will continue until the project files are regenerated and the project is r ...
[CrashReport] Crash related to movie render - UE4Editor_UnrealEd!UEditorEngine::Tick()
UE - Anim - Sequencer - Jun 22, 2017This is a common crash occurring for users in the 4.15 and 4.16 releases. It seems related to rendering movies in Sequencer, but additional information is currently unavailable. A log file is attac ...
Nested code component causes ensure in blueprint's child blueprint
UE - Gameplay - Blueprint - Aug 25, 2017When a component class (base) contains a component property (Nested) adding the base component to a blueprint and changing the position of the component will update the base and nested components as ...