Unreal Engine Issues
Unreal Engine Issues
Mover standalone backend allows non-persistent sync structs to carry over between frames
UE - Gameplay - Player Movement - Mover - Jul 16, 2025Only certain sync state structs are intended to persist between frames. These are configured via MoverComponent's PersistentSyncStateDataTypes array. There appears to be a bug in the way the standa ...
TMap "Categories" meta propagates into structs it shouldn't apply to
UE - Gameplay - Gameplay Tags - Sep 22, 2025When using TMap with "Categories" meta UPROPERTY tag for gameplay tags, it propagates into structs that it shouldn't reaching into. The expectation is that it would only impact the layer of gameplay ...
Switching to SM4 with LPVs active crashes Editor
UE - Graphics Features - Jun 18, 2015Switching to SM4 when you have LPVs active in a project will crash a project. Also reproduced in Main Promotable-CL-2589716 and 4.8.0 Launcher [Link Removed] ...
Splitting a struct in an Anim Blueprint does not work
OLD - Anim - Mar 23, 2015In an Anim BP, splitting the transform structs of a Transform (Modify) Bone node causes the node to be come non functional. Transform components must be combined in order for the node to work. EX ...
Draw Material to Render Target renders black in Standalone
UE - Graphics Features - Sep 28, 2016The 'Draw Material to Render Target' in blueprints renders black when launched in Standalone. This is not the case when using the same blueprint and running PIE. The interesting thing about this is ...
IsRunningGame( ) is false on iOS when running on device
UE - Platform - Mobile - Oct 20, 2016When running project on iOS Devices, IsRunningGame( ) in CoreMisc.h returns false. ...
Scale of the parent of a Motion Controller Component is ignored
UE - Platform - XR - Nov 17, 2016Seems like although you can set a scale on a MotionController component, the scale of the parent of the motion controller component is ignored. ...
Major performance drop with instanced meshes since PhysX 3.4 upgrade
UE - Simulation - Physics - Mar 15, 2017Major performance drop with instanced meshes since PhysX 3.4 upgrade Regression: YES Worked: 3172292 (4.13.2) Broken: 3249277 (4.14.3) For me, my results were: 4.8 through 4.13 No Collision - ...
Date Time node to Time span node returns inconsistent values
UE - Gameplay - Blueprint Editor - May 5, 2017When subtracting two date time sets to find the time span between them, the results are inconsistent. The results given give the total number of the unit measured for the time elapsed were as others ...
Importing FBX creates new materials when using the search materials import setting
UE - Editor - Content Pipeline - Import and Export - Nov 1, 2017There is an issue when importing FBX that creates new materials when using the search materials import setting. Instead of being able to use the material that is in the Base Material name, the textu ...