Unreal Engine Issues
Unreal Engine Issues
Incorrect display for default exec pin for Switch nodes
UE - Gameplay - Blueprint Editor - May 4, 2017The pin for Default for switch nodes in the preview build for 4.16 displays as a circle, this visual display for a pin is used with variables or a reroute node, but the default is and exec pin, and ...
Circular reference causes unrelated binding to fail in packaged game
UE - Editor - UI Systems - Sep 19, 2017Text field does not load binding if the widget containing the text field contains an unrelated circular dependency and Event driven loader is disabled. Tested this in 4.15, 4.16, 4.17 4.15 Does n ...
[Material Substitution] Missing Material IDs in exported CSV in 2025.2
TM - Interoperability - Oct 7, 2025Reported in SF [Link Removed] When exporting material IDs in 2025.2, downloaded materials appear to be missing from the exported CSV. In 2025.2, it appears that only local materials are included i ...
LeapHandGrabbing comment is different than actual used value for hand grabbing.
UE - Platform - XR - Oct 24, 2016The comment for LeapHandGrabbing( ) states grab strength is 0.5 when HandClosed( ) only returns true when grab strength is equal to 1.f. ...
Adding SmartObjectZoneAnnotationComponent to a blueprint actor causes a crash when building the package
UE - AI - SmartObject - Jan 30, 2025If placing an actor with SmartObjectZoneAnnotationComponent added to blueprint actor in a level, it will crash when the level open. As a workaround, adding SmartObjectZoneAnnotationComponent to the ...
Crash when moving actor on viewport with HierarchicalInstancedStaticMeshComponent.
UE - Gameplay - Components - Aug 28, 2017Create ActorBP has StaticMesh is not assigned to HierarchicalInstancedStaticMeshComponent. Place this actor on the level, and bind the StaticMesh from the Detail tab and add the appropriate Instance ...
MoveToActor doesn't update AI's path on goal actor's move
UE - AI - Mar 16, 2015A number of issues with MoveToActor have been observed in 4.7.2, including: 1. Not updating path on goal actor's move 2. hitting obstacles after path updating ...
Using LOD for Per-Poly collision doesn't work
UE - Simulation - Physics - Aug 11, 2016When choosing LODs for per-poly collision the static mesh stops blocking actors in the level. I tested this on 4.13 preview 1 and it is still an issue. I used the 3dsMax workflow for this process ht ...
HTML5 fails during Package Command with ASM enabled
UE - Platform - Mobile - May 10, 2017While testing in //UE4/Release-4.16 CL 3432136 in Binary – Launching a blueprint - FirstPerson template to Chrome encounters an error.LogPlayLevel: Program.Main: ERROR: AutomationTool terminated wit ...
Editor crash when a Breakpoint is added to a Widget's Tick function
UE - Editor - UI Systems - Aug 18, 2017Editor crashes when a widget's tick contains a breakpoint at a print string node. Based on 4.16 warning message, this appears to be caused by the text attempting to draw when no draw buffer is avai ...