Unreal Engine Issues
Unreal Engine Issues
Nanite Mesh Dither Opacity Mask Not Working in 5.6.0
UE - Graphics Features - Nanite - Jul 30, 2025In Unreal Engine 5.5.4, the Dither Opacity Mask option in a Masked material works correctly on Nanite meshes. However, in version 5.6.0, the dithering effect no longer applies to Nanite meshes. ...
[CrashReport] UE4Editor_Landscape!DeleteLayerIfAllZero() [landscapeeditinterface.cpp:2300]
UE - LD & Modeling - Terrain - Landscape - Nov 28, 2017This is a semi-common crash in the 4.18 release. There is one recorded case of this callstack also occurring back in the 4.11 release, but it seems to be an exception. All other cases have only occu ...
Inline edit conditions don't support undo
Tools - Jul 3, 2018The Editor does not support undo after making changes Inline edit properties. Working in 4.18.3 Broken in 4.19.2 Tested in 4.18.3(3832480), 4.19.2(CL - 4033788), 4.20(CL - 4181430) , 4.21(C ...
DataSmith importer is setting incorrect scale on Actors
OLD - Enterprise - Nov 16, 2018When importing, DataSmith is assigning a scale on the actors, the option to set the import scale is no longer available in 4.21. ie: a 36" item comes in at 96" This was reported and tested in 4.21 ...
There is a moment of T pause when Post Roll Frames is enabled and snapping is enabled
UE - Anim - Sequencer - Apr 19, 2021When I turn off snap, the problem does not occur The problem does not occur in 4.24.3 and 4.25.4 Occurs in 4.26.2 and UE4main ...
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 ...
MemReport does not seem to respect mesh streaming
UE - Rendering - Architecture - Aug 6, 2024The function "FStaticMeshLODResources::GetResourceSizeEx(...)" does not take into account that the buffers might be emptied, due to Mesh Streaming. This causes "obj list" to report sizes larger than ...
UAT searches wrong root folder for include paths specified in .Build.cs
UE - Foundation - Cpp Tools - Automation Tool - Jun 21, 2018When running the BuildPlugin command on a plugin in 4.20 preview 3, UAT is not detecting the correct root folder for the relative include paths specified in a module's .Build.cs. Expected: UAT is a ...
Destroying Actor via RepNotify After Seamless Travel Causes Pending Kill Warning
UE - Networking - Dec 15, 2016Attempting to destroy an actor via a repnotify after seamless travel is causing the actor to fail to be destroyed because of a pending kill warning: [2016.12.15-19.10.13:936][574]LogNetPackageMap:W ...
Skylight is not Captured in Reflection Probes
UE - Graphics Features - Apr 2, 2019Skylight is not Captured in Reflection Probes. Unable to test in 4.20 due to project provided being 4.21 Found in 4.21 CL# 4753647, 4.22 CL# 5660361, and 4.23 CL# 5687320 ...