Unreal Engine Issues
Unreal Engine Issues
The Niagara Staticmesh data interface node Random Tri Coords doesn't respect Emitter's Deterministic Settings
UE - Niagara - Aug 11, 2021From UDN: We are using the Cascade particle system and we want to render the same scene with multiple cameras, so multiple renders are required. In order to ensure that the result of the particle s ...
Pins using SGraphPinNameList do not handle reset correctly and do not have a "None" entry
UE - Framework - Blueprint Editor - Sep 15, 2023From the UDN licensee: I put together a draft PR of something that should work. As I mentioned in the PR, this works as expected with one caveat; in SPinComboBox::Construct we are hardcoding the to ...
Editing primary assets breaks the asset manager list of game feature data assets
UE - Gameplay - Oct 6, 2023When Game Feature Data assets are loaded as part of the Registering step in the game feature state machine used by Lyra and other games, they register themselves by calling AddGameFeatureToAssetMana ...
Chaos Vehicle does not make them CCD
UE - Simulation - Physics - Jan 10, 2024AWheeledVehiclePawn class tries to use CCD in the constructor, but Mesh->BodyInstance.bUseCCD = true this code does not work to activate CCD because Physics Assets could not be available at this ...
Contact shadows bug in splitscreen
UE - Graphics Features - Dec 11, 2024Screen Space shadows do not check the view boundary. This can cause extra shadows in split screen, as one view can cast shadows in another view. ...
Lack of multi-bounce when using software traced lumen radiosity
UE - Graphics Features - Lumen - Apr 4, 2025Certain Lumen Hardware Ray Tracing CVars, when disabled in isolation, will not fall back to tracing the Global Distance Field, because the Global Distance Field is still disabled. The function "Lum ...
Simulate Physics with Destructible that is using World Support can't be enabled after it's been hit.
UE - Simulation - Physics - Destruction - Apr 22, 2015When using a Destructible with World Support set simulate physics can be enabled so long as the DM has not been hit yet. Once it's been hit it no long is able to be set to simulate. ...
Camera behavior mismatch between PIE vs Packaged game
UE - Gameplay - Feb 19, 2015When a camera is setup in code with GetWorld()->GetFirstPlayerController()->SetViewTarget(this); the camera will work in the editor but a packaged version of the game has a black screen. ...
Going to an earlier point of a replay does not update to previous visibility state on an actor that was switched to not visible during demorec
UE - Networking - Jan 5, 2016Going to an earlier point of a replay does not update to previous visibility state on an actor that was switched to not visible during demorec. Reproduced in 4.9.2 binary and Main (//UE4/Dev-Main C ...
Unable to Import Sockets and LODs together for Static Meshes
Tools - Nov 6, 2015When importing a Static Mesh into UE4 that is using the SOCKET_ naming, and is part of a Level of Detail set, the socket is discarded. If the Level of Detail set is removed from the Static Mesh, t ...