Unreal Engine Issues
Unreal Engine Issues
Open Sound Control Blueprint Plugin stops working around 1 minute during play
UE - Audio - Jun 3, 2020Messages are not received around 1 minute into playing when using OSC blueprint plugin. Test Project: [Link Removed] User workaround: https://forums.unrealengine.com/development-discussion/blu ...
AR Utilities plugin requirement missing from 5.3 documentation
Docs - Sep 25, 2023Setting Up a New AR Project page for 5.3 is missing important information about including the AR Utilities plugin. https://docs.unrealengine.com/5.3/en-US/setting-up-a-new-ar-project-in-unreal-en ...
iOS launch screen might briefly appear in Portrait before switching to Landscape
UE - Platform - Mac - Nov 13, 2023Sometimes on the first launch of the game after install, the launch image will be a cropped portrait drawn in landscape orientation, on the left side of the screen, with the top and bottom getting c ...
NavMesh debug material color is changed by lighting with high lux values.
UE - AI - Debugging - May 23, 2024There is a clear difference in color saturation for the nav mesh debug material between when lit by a light with low lux values (6) and when lit with high lux values (1000) and eye adaption is enabl ...
[Mutable] Morph Targets can be disabled in packaged builds when Mesh Streaming is enabled
UE - Runtime - Mutable - Aug 28, 2026When a Mutable mesh instance is created while the actor spawns at a distance, only the low LODs are generated, and the mesh is created with no Morph Targets registered. Later, when the camera approa ...
World Partition - Deleted actors can become unloaded prior to saving
UE - Engine Scaling - Streaming - World Partition - Apr 11, 2025In world partition levels, deleted actors can become unexpectedly unloaded prior to saving, causing loss of work. Specifically, this issue occurs after the undo history has been cleared (either manu ...
Child Actors should seamlessly travel with their Parents
UE - Gameplay - Components - Dec 22, 2016When an Actor is identified to seamlessly travel, its child actors should also seamlessly travel with it (or maybe it should be an optional flag), rather than destroying and recreating on the other ...
Engine Crashes When Trying To Reimport Skeletal Mesh For One That Has No Clothing Data
UE - Simulation - Physics - Character - Jan 17, 2020The engine crashes when trying to reimport a skeletal mesh that has no clothing data. This seems related to https://jira.it.epicgames.net/browse/UE-86948. Found in 4.24.1 CL#10757647 Reproduced in ...
Crash when selecting "show" > "uncompressed animation" in Persona
OLD - Anim - Jul 1, 2016From this UDN: https://udn.unrealengine.com/questions/301289/crash-in-persona-debug-display.html Proposed solution: In UDebugSkelMeshComponent::GenSpaceBases() before PerformAnimationEvaluation() ...
Movie Render Queue renders UMG Scale Boxes incorrectly
UE - Editor - UI Systems - UMG - Apr 28, 2020Scale boxes renders incorrectly when rendered with the Movie Render Queue. Scale box seems to work fine in a normal viewport and normal Sequence render. UDN: https://udn.unrealengine.com/questions ...