Unreal Engine Issues
Unreal Engine Issues
Poor performance when Player Collision view mode active in City Sample
UE - Simulation - Debug Tools - Apr 2, 2024The Editor become unresponsive and then has very low frame rates after activating the Player Collision view mode in the Small_City_LVL and Large_City_LVL maps in the CitySample project. The curre ...
SSR on Translucency is not affected by Post Process Volume
UE - Graphics Features - May 24, 2018Screen space reflections on translucent materials are not affected by post process settings. Any changes made to SSR settings in the volume will do nothing to a material that is set to the transluce ...
OnHit not firing when capsule collider passes onto very close and same height mesh
UE - Simulation - Physics - Sep 10, 2019When a capsule collider passes from the top of one piece of geometry to another that is very close the OnHit event doesn't fire. I have attached a project that demonstrates the issue in 4.23. A vid ...
AnimNotifyState with the same class, but different content at the same time will only one be triggred
UE - Anim - Runtime - Oct 26, 2022UDN Case : https://udn.unrealengine.com/s/question/0D54z00008G3EmwCAF/two-c-based-animnotifystate-with-the-same-class-but-different-content-at-the-same-time-will-only-one-be-triggred?fromCase=1 ...
Multiplayer VR Preview Support Broken
UE - Platform - XR - Jul 11, 2016The VR Preview used to work with multiple clients but now only works with the first client. This makes testing multiplayer features difficult or impossible as there is no way to change which client ...
[CrashReport] UE4Editor_Core!FModuleManager::UnloadModule() [modulemanager.cpp:557]
UE - Foundation - Core - Feb 27, 2017Error message: Assertion failed: ModuleInfo.Module.IsUnique() [Link Removed] [Line: 557] Source Context: Most recent user affected CL: Logs: See attached Issue call stack shares some similariti ...
Procedural Mesh Component 'Create StaticMesh' Function corrupts mesh tangents
UE - LD & Modeling - Modeling Tools - Mesh Editing - Oct 25, 2018After clicking 'Create StaticMesh' button on an Procedural Mesh Component, and saving the mesh, the created mesh has bad tangents. Included in the attachments, is a test project with a parallax mate ...
Split pins on nodes within sub-graphs in an animation blueprint are broken
UE - Anim - Runtime - Mar 16, 2021There's a bug in the anim bp compiler which results in split pins on animation nodes not being merged properly back onto their parent pin during compilation. The result of this is that any input to ...
In Vehicle sims, CenterOfMass override isn't factored into UpdateMassProperties
UE - Simulation - Physics - Mar 24, 2025Origin from this UDN ticket, https://udn.unrealengine.com/s/question/0D5QP00000sGtbO0AS/chaosvehiclemovementcomponent-intertia-tensor-isnt-adjusted-for-center-of-mass-override?fromCase=1 TLDR is th ...
TSoftObjectPtr does not replicate properly
UE - Networking - Nov 27, 2018Right now USoftObjectProperty does not implement NetSerializeItem so it falls back to the implementation in UObjectPropertyBase. This only works correctly if the object happens to be in memory, othe ...