Unreal Engine Issues
Unreal Engine Issues
Building Packed Level Actors causes references to break in the Packed level Actors' Blueprints
UE - World Creation - Worldbuilding Tools - Level Instances - Oct 27, 2022This is not a regression. Tested in //UE5/Release-5.0 CL 20979098 Building Packed Level Actors causes references to break in the Packed level Actors' Blueprints. Rerunning the Build > Pack Level Ac ...
Crash closing a project that was packaged on Windows for Linux
Tools - May 11, 2017This occurred with both Development and DebugGame build configurations. In the game's console I tried both "quit" and "exit" and reproed the crash. The crash also occurs via Alt + F4 or closing vi ...
Crash in FNiagaraGPUInstanceCountManager::AddDrawIndirect when Android Vulkan Mobile preview platform is enabled
UE - Niagara - Nov 14, 2024In the Android Vulkan Mobile preview mode, when multiple GPU niagara systems are visible and the user moves the camera around the level it can cause a crash, potentially caused by a race condition o ...
Crashes when attempting to use an Instanced Struct inside Control Rig / Rig VM
UE - Anim - Rigging - Control Rig - Mar 17, 2025Currently, the Control Rig Editor allows the user to use the "Instanced Struct" type, for example for a variable or function input/output. However, this type does not seem to be properly supported ( ...
Custom depth gets cleared for each eye in VR
UE - Platform - XR - Dec 19, 2020From licensee: "Expected behavior (as seen in UE 4.25...also confirmed in 4.24):"[Image Removed] "Actual behavior in UE 4.26:"[Image Removed] Report from a licensee: In VR when using custom dep ...
DMX component in world partitioned level fails cook
UE - Virtual Production - IO - DMX - Feb 10, 2025Since UE5.5, RegisterComponent has been called during cook process, So unnecessarily references from DMXLibrary to DMXComponent has been added. There is a workaround to avoid adding references : ...
Use Per Property Manually Overridden Texture Sizes when Merging Materials generating HLODs only creates 1024 Texture Sizes
UE - World Creation - Worldbuilding Tools - HLOD - May 3, 2017Texture sizes incorrect and always output 1k resolution textures when creating HLOD proxy meshes and using the per property manual override for texture sizes. I have attached a screenshot which exh ...
Nested components do not appear in proper order in viewport instances
UE - Gameplay - Blueprint - Nov 22, 2017When an actor contains a nested component (components declared inside another component class), the hierarchy for the actor blueprint does not match the hierarchy of a placed instance of the actor ...
Instanced Properties remain after compile
UE - Gameplay - Blueprint Editor - Jan 25, 2018Our team has been using property instances, and have run into several problems. We were able to reproduce one of the problems, and I was hoping to have your team look at it. General scenario. We ha ...
Different Number of Frames imported from the same FBX between UE 4.8 and 4.9
OLD - Anim - Sep 14, 2015Using the same import settings in UE4.8 and UE4.9 will result in a different number of frames of an animation being imported from the same FBX file. If you import the same fbx animation which in M ...