Unreal Engine Issues
Unreal Engine Issues
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 ...
Memory leak when using Blueprint Debugger while inspecting a return value
UE - Framework - Blueprint - Mar 11, 2022Potential memory leak when using Blueprint Debugger to inspect a return value multiple times while playing. User also reported this would cause a crash, but I didn't try to max out ram usage to trig ...
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 ...
Deleting console key does not persist
UE - Foundation - Core - Oct 23, 2014When I go to the Input section of the Project Settings and change the key that the console is mapped to, when I restart the editor, there are now 2 bindings to the console. The default ~ mapping as ...
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 ...
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 ...
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 ...
Package fails to load due to EditorOnly data when launched onto Mac or Windows
UE - Foundation - Core - Jun 28, 2017LogPlayLevel: QAGame: [2017.06.28-14.09.14:706][ 0]LogLinker:Warning: Unable to load package (../../../QAGame/Content/UMG/UMG_Sprite.uasset). Package contains EditorOnly data which is not supported b ...
[CrashReport] Mac crash - FRCPassPostProcessInput::ComputeOutputDesc()
UE - Graphics Features - Sep 28, 2017This is a new Mac callstack that just appeared after the 4.17.2 hotfix. The callstack shares similarities to older Windows crashes and may be related:https://jira.it.epicgames.net/browse/UE-42135ht ...
NaN is handled differently when clamped on Windows and Android/iOS
UE - Platform - Mobile - Oct 18, 2017NaN (Not a Number) is handled different when clamped on Windows and Android/iOS. If you clamp a NaN (Acheived by -3 ^ 0.2 in the reproduction project) from 0.0 to 1.0 and then print the result, you' ...