Unreal Engine Issues
Unreal Engine Issues
Each changing collision response increases FPhysXTask count
UE - Simulation - Physics - Jul 8, 2019calling SetCollisionResponseToChannel or something similar, FPhysXTask will ever increase . Finally, it causes serious frame rate drop. That count can be reset by calling RecreatePhysicsState. ...
The behavior of translucent sorting is different between 4.23 and later.
UE - Graphics Features - Apr 24, 2020Also, from 4.23 onwards, if you move the mesh back and forth, the order of the translucent sort will be switched. ...
CharacterMovement doesn't clear velocity
UE - Simulation - Physics - Oct 11, 2024Velocities are not being cleared when physics simulation set to false. ...
Incorrect resolution used because SetProcessDpiAware() is not called when bAllowHighDPIInGameMode=False
UE - Rendering Architecture - Aug 8, 2025The incorrect resolution is used on computers with 4k monitors that use DPI scaling (default 150%) because the default for UE projects is bAllowHighDPIInGameMode=False which results in SetProcessDp ...
Filtering by collection is broken
UE - Editor - Content Pipeline - Content Browser - Mar 2, 2019This happens because the Collections module isn't loaded when the FFrontendFilter_TextFilterExpressionContext instance is created: , CollectionManager(FCollectionManagerModule::IsModuleAvailable() ...
Crash when launching dx12 for the first time with Rect Lights
UE - Rendering Architecture - RHI - Mar 20, 2019Users on the forums are hitting a crash on their initial launch of the engine into dx12. There is currently a workaround to load into the project with dx11 first, compile shaders, then youre fine to ...
Lit Translucency Receiving Shadows with Forward Shading Enabled
UE - Graphics Features - Aug 13, 2018When forward shading is enabled, particles that have materials with their lighting mode set to "VolumetricNonDirectional" will recieve shadows. Attached images provided by user. Found in 4.19 CL# ...
Actor foliage does not respect "foliage.CullDistanceScale"
UE - World Creation - Worldbuilding Tools - Oct 15, 2024Actor foliage does not respect the "foliage.CullDistanceScale" console variable. This was brought up in a UDN: [Link Removed] ...
Vive - Motion Controller Component - Low Latency Update Regression
UE - Platform - XR - May 22, 2019Motion Controller component attachments lag behind parent. Not happening on Oculus Rift Workaround: Set "Disable Low Latency Update" on your Motion Controller Components to 'true' User Sub ...