Unreal Engine Issues
Unreal Engine Issues
Movement Tolerance for Spawn Per Unit Does Not Function
UE - Niagara - Oct 19, 2018Motion tolerance for Spawn Per Unit does not affect the particle system. Even if the vaules are set very high. Found in 4.18 CL# 3832480, 4.19 CL# 4033788, 4.20 CL# 4369336, 4.21 Preview 2 CL# 4472 ...
Blueprint Editor Show Grid does not toggle the grid in the viewport
UE - Editor - Workflow Systems - Oct 28, 2020The grid in the blueprint editor is not able to be hidden via the Show Grid flag in the viewport dropdown. This has regressed sometime in //Ue4/Release-4.25 as I cannot reproduce this issue in //UE4 ...
3D Grass may not appear in Path Tracer renders
TM - Rendering - Sep 19, 2025Reported in SF [Link Removed] Path Tracer renders of images with 3D grass may not display 3D grass in the foreground of an image. The 3D grass material will not appear or may appear to cut off at s ...
Changing Blueprint Interface's Const Status Doesn't Update Blueprints its Already Implemented In
UE - Gameplay - Blueprint - Nov 8, 2016Implementing an interface that contains const functions and later attempting to change these functions to be non-const does not update the status of the functions inside of the actor they are implem ...
Undo in Skeletal Mesh Editor causes model to disappear
UE - Gameplay - Nov 9, 2016I can across this issue when I was Ad Hocing and wanted to pose a skeletal mesh in a certain way. I imported one into my project and moved a bone, then undo and it was gone. I wanted to check if it ...
r.ScreenPercentage.Editor does not function
UE - Graphics Features - Jun 2, 2016Setting r.ScreenPercentage.Editor does not affect the upsampling/downsampling of the viewport in the editor. Regression: YES - the console command correctly adjusted the screen precentage in 4.11.2 ...
Unable to change/edit elements of Blueprint instances of Actor Component set UObject arrays
UE - Gameplay - Components - Nov 20, 2016When an array of custom UObjects is defined in an actor component class, blueprint instances of the component class cannot update the array elements. Array elements only update inside the blueprint ...
Crash Occurs on Project Load When Casting a Child Actor Component's Parent to the Parent Class
UE - Gameplay - Blueprint - Dec 5, 2016A crash is occurring on project load when attempting to use GetParentActor and cast that to a Parent class that contains a child actor component inside of that child actor component's blueprint. T ...
Nativized Packaging Fails When Delegates Have Same Output Parameters
UE - Gameplay - Blueprint Runtime - Dec 12, 2016Attempting to package a project using Nativize Blueprint Assets that contains delegates that have the same output parameters (such as binding an event to the OnCanvasRenderTargetUpdate event as show ...
"Clothing" options do not appear after importing an apx made with the 3.4 plugin
UE - Simulation - Physics - Character - Jan 13, 2017"Clothing" options do not appear after importing an apx made with the 3.4 plugin Regression: Sort of. 4.14 now uses the 3.4 version of PhysX and this only appears to happen with apx files exporte ...