FCableSceneProxy::BuildCableMesh thrashes memory allocator

UE - Simulation - Physics - Feb 12, 2025

FCableSceneProxy::BuildCableMesh in CableComponent.cpp:233 showed up as a hot spot in profiling because the two TArray allocators in SetDynamicData_RenderThread used by BuildCableMesh are created an ...

editor crashes when variable inside of a struct is set to a class type then the object is moved to a new folder

UE - Gameplay - Blueprint - Mar 17, 2015

If a struct has a variable set to a class type, then the object of that class type is moved to a new folder in the editor, the struct will replace the class type with "class", which causes the edito ...

SVN plugin unable to differentiate between two working copies when using same login

Tools - Jan 3, 2017

Whenever you use the same login to connect to SVN source control in the editor, the editor's SVN plugin is unable to differentiate between two working copies of the same repo. Any checkouts made in ...

Crash in Debug Camera (patch provided in comment !)

UE - Gameplay - Feb 12, 2019

Hello, A licensee has reported us a crash in DebugCameraController / DebugCameraHUD.  It is due to a missing check in ADebugCameraHUD::PostRender() of SelectedActor set in ADebugCameraController ...

Error during packaging if nativizing a blueprint that contains a TMap with a UserDefinedEnum as a key

UE - Gameplay - Blueprint - Jun 17, 2019

Certain Map container calls (e.g. Find, Add) will fail to compile at packaging time if a Blueprint class containing a Map variable with a user-defined enumeration as the key type is nativized. This ...

Instanced static meshes fire an erroneous performance assert about loose parameters.

UE - Graphics Features - Sep 4, 2019

 "This ensure is intended to catch regressions where rendering programmers add a loose parameter to LocalVertexFactory, breaking dynamic instancing on regular static meshes.  InstancedStaticMeshes c ...

Increasing Font Size Makes The SceneRendering Table Impossible To Read

Tools - Jan 27, 2020

The scenerendering graph doesn't display correctly when you increase the Small Font for the Engine. The rows don't adjust to the font size. The user increased font size to make print strings in VR ...

Crash when opening the static mesh editor

Tools - Jan 26, 2021

We have been unable to get an internal repro so far, however we have had quite a few reports from the community reporting this issue. One user also stated this happens when migrating a project over ...

BP timelines: when converting internal curve to external, the external curve isn't used until BP is recompiled

UE - Gameplay - Blueprint Editor - Aug 28, 2023

Blueprint timelines: when converting an internal curve to an external curve asset, the curve asset's data isn't used until the blueprint is recompiled. This is confusing as there is no indication th ...

'GetClassDefaults' Can Cause Blueprint To Become Modified When Unrelated Blueprint Is Compiled

UE - Gameplay - Blueprint - Sep 22, 2023

The stems from a really old change (CL 2948683) to fix [Link Removed]. Compiling ObjectA will call RefreshExternalBlueprintDependencyNodes on its dependent BP,  ObjectB_ReferencesA, which reconstru ...