Unreal Engine Issues
Unreal Engine Issues
Crash when editing gameplay tag query in a structure
UE - Gameplay - Blueprint - Feb 20, 2017When I try to edit Gameplay tag query in a blueprint structure the editor crashes. Regression: No. This issue affects versions: 4.15, 4.14.3, 4.13.2 (Binary Versions) ...
[CrashReporter] UE4Editor-PropertyEditor!FPropertyNode::GetDiffersFromDefaultForObject(FPropertyItemValueDataTrackerSlate &,UProperty *) [PropertyNode.cpp:1634]
UE - LD & Modeling - Terrain - Landscape - Sep 13, 2019Generated from CrashReporter ErrorMessage: Unhandled exception Callstack similar to [Link Removed] comments from community: Clicked on a procedural grass node in the Brushify material This ...
Crash Occurs When Attempting to Pass a Struct Containing an int64 into a Blueprint Function
UE - Gameplay - Blueprint - Feb 17, 2016Attempting to pass a struct containing a variable of a type that is not compatible with blueprints into a blueprint function causes the editor to crash upon PIE. Found in 4.10.2 binary. Reproduced ...
'Malformed sequence hierarchy' ensure hit after modifying sub-sequence tracks
UE - Anim - Sequencer - Sep 5, 2025It's possible for there to be multiple instances of the same sequence in the evaluation states cache if the same sequence is used in multiple sub-sections. Caches are never removed from the evaluat ...
FRuntimeFloatCurve in datatable causes editor crash
UE - Editor - Apr 24, 2024Inside SCurveEditor::ZoomToFitHorizontal and SCurveEditor::ZoomToFitVertical, the program navigates through a TArray<FRealCurve*> called CurvesToFit in a for each loop. Inside the for loop, if the p ...
Access Violation in delegatesignatureimpl.inl after HotReload
UE - Foundation - Core - Jan 27, 2017This is the third different callstack in an attempt to repro a HotReload crash I am experiencing. The other two are:[Link Removed]: Nullptr Ensure and crash after HotReloading[Link Removed]: Assert ...
AnimNotify serialization crash in editor
UE - Anim - Runtime - Mar 15, 2026The crash is caused by changing the variable type of an AnimNotify that is already referenced by a montage. This issue cannot be reproduced in 5.6. ...
Deleting the code files for a custom component from a project will result in an Engine crash when trying to open any Blueprint using that component.
UE - Gameplay - Blueprint - Feb 20, 2015Adding a custom component to a Blueprint and then deleting the code class defining that custom component from the project will crash the Editor any time you try to open a Blueprint containing that c ...
Data Tables with 'ParticleSysParam' structs cause crash
UE - Niagara - Feb 4, 2019Data Tables with 'Particle Sys Param' structs in them as variables will crash when opened. ...
Origin Shifting Landscape crashes Render Thread
UE - LD & Modeling - Terrain - Landscape - Jan 10, 2020Shifting the world origin with a landscape in the level causes a crash in the render thread. This does not crash in 4.23.1 (CL-9631420). This was reported and tested in 4.24.1 (CL-10757647) and rep ...