Unreal Engine Issues
Unreal Engine Issues
Niagara Simulation Stage + DynamicMaterialParameters crash
UE - Niagara - Feb 6, 2021deleting the code "&& SimulationStages[i]->bEnabled" in UNiagaraEmitter::GetScripts will bypass the problem [Image Removed] ...
Water plugin's RVT/ISR shader permutations fail PSO creation with instanced stereo (D3D12 SM6)
UE - Rendering - RHI - Jun 4, 2026With Instanced Stereo Rendering enabled and the Water plugin enabled (default), PSO precaching speculatively compiles WorldGridMaterial × FWaterVertexFactory* permutations for the Runtime Virtual Te ...
World Composition Browser sublevels register as edited/needs to be saved when levels browser is closed and reopened
UE - LD & Modeling - Terrain - Landscape - Mar 13, 2015Sublevels appear dirty when the level browser is closed and re-opened. ...
Altering Player Controller in Gamemode resets upon reloading project
UE - Gameplay - Blueprint - Nov 26, 2014If a user sets the player controller to a custom Player Controller inside of a gamemode, then compiles, saves, and closes both the blueprint and the editor. Upon reloading the player controller in t ...
Engine crashes when adding 'Tick' to HideCategories in a BP or C++ project
UE - Gameplay - Blueprint - Mar 6, 2015When adding the word 'Tick' to HideCategories in a blueprint or C++ project, the Editor crashes, with a crash reporter. ...
4.22.1 Crash in FVulkanResourceMultiBuffer::Lock
UE - Rendering - Architecture - RHI - Jul 31, 2019Vulkan Multibuffer Lock mechanism for ReadOnly does not appear to be implemented. Temporary workaround has been provided to licensee. ...
[Standalone Installer] The binaries for Mac are missing
UE - Editor - Content Pipeline - Datasmith - Installers - Mar 1, 2022Unable to kill UnrealBuildTool, UBT no longer propegates sigterm
UE - Core - Cpp Tools - UnrealBuildTool - Aug 24, 2026When UBT is launched through one of the standard wrapper scripts, Ctrl-C no longer cancels the build. The `dotnet UnrealBuildTool.dll` process and its compile actions keep running to completion in t ...
called custom functions do not update parameter names upon compile, must be replaced
UE - Gameplay - Blueprint - Apr 21, 2015Parameter names do not update on custom functions that are already called in event graph after compiling blueprint. ...
Destroy Component inside of a actor blueprint component does not trigger if target is "self"
UE - Gameplay - Blueprint - Mar 18, 2015If a "Destroy Component" has a target of self within a blueprint component, the "Destroy Component" node will not trigger. ...