Unreal Engine Issues
Unreal Engine Issues
Crash when interacting with an Actor containing an Instanced Static Mesh that is in a Locked level
UE - Editor - Workflow Systems - Mar 30, 2023This is not a regression. Tested in //UE5/Release-5.1 CL23901901 Editor crashes with an assertion after interaction with an Instance Static Mesh component that is in a locked level. This doesn't af ...
Sequence thumbnails save with visual issues
UE - Anim - Sequencer - Aug 1, 2025[Link Removed] When camera tracks are activated, saving the sequencer results in captured anomalies: 1. Incorrect aspect ratio 2. Additional post-processing effects such as lens flare appear 3. ...
TMap<Bool is disallowed despite bool having a hash
UE - Gameplay - Blueprint - Nov 22, 2022Reproduced 3/3 times. User is unable to create a new TMap with bool key through Blueprints (which is the expected result). Issue is technically a Regression, as the ensure does not occur in //UE5/ ...
Regression: FAnimInstanceProxy memory leak when BeginDestroy() called on UAnimInstance before USkeletalMeshComponent
UE - Anim - Runtime - Feb 10, 2025In UE 5.5, the fix applied by CL 36529858 in ue5-main updated USkeletalMeshComponent::ClearAnimScriptInstance() to call AnimScriptInstance::UninitializeAnimation() on the animation instance. This, i ...
When Building Light for a SubLevel of a project, BSPs will be built into the level regardless if hidden or not
UE - LD & Modeling - Modeling Tools - BSP - Feb 23, 2016BSPs will be built with light/shadow extrapolated even if they are placed in a hidden sub_level of the project at the time of building. Also Tested in 4.10.4, 4.11 Preview 6 and Dev-Editor-CL-28772 ...
No visual updates when adjusting the curve editor in UMG for the first two points on the timeline
UE - Editor - UI Systems - Jul 6, 2015When Switching the curve editor to cubic interpolations for example moving the blue handles will not change the curve. However, if a third point is add this function works as intended from the 2 poi ...
Materials using Media Textures appear upside down in UMG on Android
Tools - Jul 7, 2015When a user applies a media texture to a material and then applies this to an image widget, this material appears upside down when launched on to the Galaxy Note 3 (OS-Android 5.0) and the Nexus 5 ( ...
Instanced Static Meshes do not Cast Shadows correctly when Baked
UE - Graphics Features - Aug 31, 2016When an instanced mesh that is added in the construction script is far enough away from the root component and has it's lighting baked the shadow will not render or will render incorrectly. This w ...
Poses do not intially show up in pose tab in Persona
OLD - Anim - Oct 4, 2016The pose asset list does not update unless Persona is closed and opened or if the user searches in the search bar. This is a regression from 4.13.2 Same thing as this old bug: https://jira.it.epic ...
Intermittent crash in CacheOptimizeIndexBuffer on Editor startup on Linux
UE - Platform - Linux - Nov 16, 2015Building 4.10 from the GitHub release branch on Linux fails to open after install and instead crashes User Suggested Fix: Switching triangle order optimization off with r.TriangleOrderOptimization= ...