Unreal Engine Issues
Unreal Engine Issues
Private lobbies cannot be invited to on Steam
UE - Online - May 13, 2019The old method doesn't work with private match invites as it doesn't have the right security permissions. It's still valid for dedicated servers. It also doesn't work properly with lobbies on VR eit ...
Montage Root Motion does not work from sub anim instances
UE - Anim - Gameplay - Oct 25, 2019Root motion from sub instances is not used when the parent instance is marked as 'Root Motion from Montages Only'. Proposed fix is to modify USkeletalMeshComponent::IsPlayingNetworkedRootMotionMo ...
ARCore - "Get Supported AR Video Formats" returns empty on Android
UE - Platform - XR - Dec 18, 2019Get Supported AR Video Formats node only functions on iOS. (ARCore Library has similar 'Get ARCore Camera Config' node currently) Tested with iPad A1701 and Note 9 ...
ISM Component in an instanced BP does not take into account changes to NumCustomDataFloats from the BP class
UE - Graphics Features - Sep 16, 2022PerInstanceSMCustomData is bulk serialized and doesn't get changed on the BP instance when changing NumCustomDataFloats, possibly causing out of bounds array access leading to a crash. Possible sol ...
FMaterialResource::IsDualBlendingEnabled bug
UE - Rendering Architecture - Materials - Jul 24, 2023The user has a proposed fix for this in the case. FMaterialResource::IsDualBlendingEnabled needs the following modification that includes MaterialInstance check: bool bMaterialRequestsDualSourceBle ...
Auto Exposure Compensation Curve issue when switching from Histogram to Manual
UE - Rendering Architecture - Feb 21, 2024When switching the Camera's Exposure Metering Mode from Histogram to Manual, there is a single-frame flash. The Licensee has a proposed code change that would fix this issue. Also found in 5.4, CL 3 ...
Performance hitch from RemoveGeometryCache flushing the render thread
UE - Editor - Content Pipeline - Alembic - Jun 12, 2025FGeometryCacheStreamingManager::RemoveGeometryCache calls FlushRenderingCommands which shows up as a hitch when profiling. [Link Removed] Ideally the flush added in CL#23782411 to fix a rare deadl ...
Creating a blueprint from selected components crashes editor if components contain a blueprint with a component
UE - Gameplay - Blueprint - Nov 4, 2015Frequency: 2/2 Crash Reporter: [Link Removed] Editor crashes if the option: "Convert Selected Components to Blueprint Class" is selected from main editor viewport>Blueprints context menu. This occu ...
Editor crash when switching between levels in the content browser
Tools - Aug 26, 2015Switch between levels in the content browser caused a crash while loading the level. Project On Google Drive: [Link Removed] ...
Crash when trying to find references to blueprint Structure node
UE - Gameplay - Blueprint - Oct 12, 2015Right clicking on a struct node inside a blueprint and selecting the "Find References" option will cause the editor to crash Crash Reporter: [Link Removed] ...