Unreal Engine Issues
Unreal Engine Issues
Audio stops working when unplugging and replugging USB headset
UE - Audio - Jan 19, 2016Game sounds can no longer be heard after unplugging and re-plugging back in a USB headset during a match. This also occurs when plugging a USB headset anytime during the course of the match. ...
Crash when removing and re-adding instances to an InstancedStaticMeshComponent with PerInstanceCustomData.
UE - World Creation - Worldbuilding Tools - Jan 22, 2026When using an InstancedStaticMeshComponent with PerInstanceCustomData, the number of float elements in the "Custom Data" array should always be equal to NumCustomDataFloats multiplied by the number ...
Local binary build fails for iOS platform.
UE - Foundation - Core - Oct 5, 2017Attempting to create a local binary build of the Engine for the iOS platform using BuildGraph is currently failing. While trying to build UHT for Mac using a remote build, the build fails because it ...
Delta struct serialized fast arrays replicating new elements with no changelist
UE - Networking - Jun 14, 2021There is a scenario where delta struct serialized fast arrays can replicate changes that introduce additional elements to the array, but without changelists containing the new data. This needs furt ...
Net Cull Distance does not work with Pawn only Character
UE - Gameplay - Player Movement - May 4, 2015Licensee also posted on Asnwerhub here, https://answers.unrealengine.com/questions/220787/bug-net-cull-distance-doesnt-work-when-the-player.html Also Reproduced in Main Promotable-CL-2535351 & Rele ...
Crash entering PIE without Magic Leap SDK referencing delayhlp.cpp:323
UE - Platform - XR - Jan 31, 2019Editor crash when PIEing without ML SDK installed on machine. This did not occur at the same CL on a P4 build. This did not occur on a machine with the ML SDK installed. Does not occur in //UE4/Re ...
Ensure occurs when RBAN simulated rigid body approaches UseComplexAsSimple mesh
UE - Simulation - Core - Jun 30, 2022When a collision enabled RBAN node attempts to collect surrounding meshes, if there is a mesh with UseComplexAsSimple, it will hit the Ensure when cloning a mesh on the task graph thread. Disabling ...
Assertion trying to open packaged project on Linux: Default__MaterialInterface was listed as a fixed load order but was already processed
UE - Foundation - Core - Feb 20, 2017This might be related to [Link Removed]. ...
LIVE: EDITOR: FBX: Combined Meshes Flag does not work when importing multiple LODs in a single FBX
UE - Editor - Content Pipeline - Import and Export - Oct 10, 2014BRANCH: MAIN CHANGELIST: 2322258 PLATFORM: Windows DESCRIPTION: When importing a mesh into the editor if there are multiple LOD setup meshes in a single FBX they will not import as a single asset w ...