Unreal Engine Issues
Unreal Engine Issues
Niagara Sub UV Index ignored
UE - Niagara - May 16, 2019Using the Particles.SubImageIndex has no effect on what portions of the a UV are rendered in Niagara. Tested in 4.21.2 (CL - 4753647), 4.22.1 (CL - 6063286), 4.23 (CL - 6533064) ...
MoviePipeline: Can't inherit from UMoviePipelineSetting in BP due to PURE_VIRTUAL
zComponent - Archive - Oct 28, 2021IsValidOnMaster/IsValidOnShot need to be BlueprintNativeEvents with a default C++ implementation and allow derived classes to override the function. This is needed so that you can create custom set ...
LiDAR assets do not render in after relaunching the engine
UE - Editor - Content Pipeline - Datasmith - Aug 15, 2023LiDar point clouds are failing to render when saving and relaunching the project This issue is occurring in //UE5/Release-5.3 @ CL 26560699 This issue is occurring in //UE5/Release-5.3 @ CL 2600198 ...
Landscape Layer Blending Painting Issue
UE - Graphics Tools - Terrain - Sep 10, 2025There are two issues when painting landscape layers.Paint: When painting between different layers, square-shaped artifacts or splotches appear.Fill Layer: The blended weights of other layers aren't ...
Cluster Group Index Causes Incorrect Break Events in Geometry Collections
UE - Runtime - Deformable - Feb 25, 2026More details in this [Link Removed] ...
Custom Events can't be called after changing level blueprint or switching maps
UE - Gameplay - Blueprint - Dec 23, 2014Custom events cannot be called as functions after being made in level blueprints or after changing levels. User must close and re-open editor to be able to call a custom event. ...
The Show Collision option in the Viewport does not show all collision during Simulate
UE - Simulation - Physics - Jan 30, 2015The Show Collision option in the Viewport does not show all collision during Simulate. ...
Screen goes black if standalone window loses/regains focus in Oculus Mode
UE - Platform - XR - Dec 10, 2014If the console command "Stereo on" is used to enter Oculus mode in a standalone window, the onscreen window and Oculus viewport go black if the standalone loses window focus. Window is still runnin ...
Typos in Math_Hall of ContentExamples
Docs - Samples - Sep 20, 2016Need to update label from 0 to 1 on the left slider of display 1.6Need to update labels for small slider on display 1.10 to display 0, 1, 2 as those values can go up to 2Need to update 1.12 Example ti ...
Launching a specific UDN Project with Vulkan Support enabled crashes launching on Quest
UE - Platform - XR - Jul 30, 2020When attempting to run the attached Project submitted from UDN, it will crash on launch. If Vulkan support is disabled, the Project will run as expected on Quest. This issue DOES NOT appear to repro ...