Unreal Engine Issues
Unreal Engine Issues
Compile errors when passing interface array into UFUNCTION
UE - Foundation - Core - Oct 9, 2015Attempting to pass an array of interfaces into a UFUNCTION will fail at compile stating "cannot convert argument 1 from 'TArray<ElementType,FDefaultAllocator>' to 'const TArray<TScriptInterface<IInt ...
Line Trace Does Not Register Hit On Bottom Of Landscape
UE - Simulation - Physics - Dec 15, 2016When using a line trace under a landscape it no longer registers a hit on the underside. REGRESSION? Yes Worked 4.13.2 CL 3195953 Broken 4.14.1 CL 3224400 ...
Custom Depth Post Process Stencil does not work with Material Billboard on Actors
UE - Graphics Features - Nov 27, 2017MaterialBillboardComponent does not render with CustomDepth material in PostProcessVolume as other objects do. Found in 4.16.3 CL 3561208, 4.17.2 CL 3658906, 4.18.1 CL 3454814 ...
Android mic stops capturing audio after 2nd load of app
UE - Audio - Aug 1, 2018The Android app stops capturing audio on the second loading. Tested in 4.19.2 (CL - 4033788), 4.20.1 (CL - 4239966), 4.21 (CL - 4243265) ...
Structures don't save map elements that point to an asset reference
UE - Gameplay - Mar 15, 2019Adding map elements to a structure does not retain the information after saving and closing the project. This only appears to happen after you add a considerable number of Map containers inside a st ...
Atan2() missing from Math Expression node
UE - Gameplay - Blueprint - Feb 11, 2020Using the math expression Atan2(y,x) inside of a math expression node results in an error. Tested in: 4.23.1 CL#9631420 , 4.25 CL#11341939 ...
Nodes of inherited function don't refresh automatically in the opened BP editor if implemented interface is altered
UE - Gameplay - Blueprint Editor - Jul 14, 2020Nodes of inherited function don't refresh automatically in the opened BP editor if implemented interface is changed.Workaround: refresh nodes manually Regression: NO Can be reproduced on the 4.25.1 ...
Crash when locate_bound_objects is called
UE - Anim - Sequencer - May 14, 2024This has been tested internally using an editor utility widget yielding the same results. That small project is attached. BoundingObjectTest. 1) Open the project 2) Run the Editor Utility Widget ...
Foot Placement Node does not account for Mesh and Actor Scale
UE - Anim - Runtime - Anim Blueprints - Jun 17, 2025When scaling down the character in the Game Animation Sample to 0.1 (Actor Scale or Mesh Scale), the lower body becomes crouches, not taking into account the difference in pelvis and foot difference ...
Landscape Grass Type will not build with static lighting leaving 'Lighting needs to be rebuilt warning.'
UE - World Creation - Worldbuilding Tools - Foliage - Sep 3, 2015When using the Landscape Grass Type and using a Static or Stationary light will throw the 'Lighting needs to be rebuilt' warning. ...