Unreal Engine Issues
Unreal Engine Issues
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 ...
Warnings displayed when launching the editor in DX12
UE - Graphics Features - Oct 6, 2016Following warning is displayed in the log when launching in dx12:[2016.10.06-22.33.36:185][ 0]LogD3D12RHI:Warning: Root signature created where the root parameters take up 18 DWORDS. Using more tha ...
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 ...
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 ...
Containers of Instanced Subobjects don't inherit as expected
UE - Gameplay - Blueprint Editor - Jul 6, 2018Changes made to array containers in the parent Instanced Subobject Blueprint does not affect the child. Working in 4.18.3 Broken in 4.19.2 Tested in 4.18.3(CL - 3832480), 4.19 (CL - 4033788), 4. ...
Blueprint Functions with a Parameter Named "Category" Will Change the Functions Category Back to Default
UE - Gameplay - Nov 19, 2018When creating a Blueprint Function under a non-default category, if you name one of its parameters "Category" the function will be moved back to the default category. This is working as expected in ...
Custom CrowdManagerClass reference is set to none when restarting the Editor
UE - AI - Nov 21, 2018When setting a C++ class that's derived from CrowdManager as the "Crowd Manager Class", will cause the "Crowd Manager Class" value to be set to "None" when the Editor is restarted. This issue was r ...
Wacom Tap to Left Click Doesn't Work with Drop Down Menus
Tools - Nov 23, 2018While using a Wacom tablet, if you tap to click on drop down menus they will not open up. The menu will appear for a moment then close immediately. Occasionally if you click away from the drop down ...
Blueprint graph stops drawing correctly after using shift-drag
UE - Gameplay - Blueprint Editor - Dec 26, 2018When shift-dragging in the Blueprint graph and ending the drag on a node with a connected wire, the Blueprint graph will freeze up. There is an attached video that showcases the issue as well. Th ...
Enabling Merge GC Clusters and Blueprint Clustering causes a packaged Window project to crash
UE - Foundation - Core - Cooker - Jan 3, 2019Enabling the check boxes for Merge GC Clusters and Blueprint Clustering causes packaged Windows projects to crash on startup. The log and dump files regarding this crash have been attached to this t ...