Unreal Engine Issues
Unreal Engine Issues
Particles Don't Use Velocity "In World Space" Properly
UE - Graphics Features - Mar 17, 2017The particle system has its initial velocity and its velocity/life in world space. It is expected that the particle's orientation won't influence the particle's velocity. That isn't the case though ...
Changing value on float input pin does not automatically provide decimal point
UE - Gameplay - Blueprint Editor - Jun 8, 2017Entering a whole number value to a float input does not create a ".0" at the end. This was noticed as it causes a small quality of life issue with orphaned pins, where the user can't simply type th ...
Attaching a removed Actor in Sequencer causes a crash
UE - Anim - Sequencer - Jan 6, 2020This is a regression from 4.23.1 (CL-9631420) where Sequencer just displayed the re-attached binding in yellow text instead of crashing. The user suggests that the deleted actor should be removed fr ...
Editor Crashes On Startup After Enabling Light Propagation Volume (LPV) With Forward Shading
UE - Graphics Features - Feb 20, 2017After enabling Forward Shading that project can no longer operate while "r.LightPropagationVolume = 1" since it will crash immediately. ...
Xcode 8 Beta Toolchain Breaks InfiltratorDemo on AMD On 10.11.6
UE - Platform - Apple - Jul 27, 2016InfiltratorDemo rendering is entirely broken on 10.11.6 using AMD GPUs when the shaders are compiled to byte code using the Xcode 8 Beta 2 toolchain. This does not appear to occur with the Xcode 7.3 ...
Level Sequence Actor- bTickWhenPaused is unsettable from the details view
UE - Anim - Sequencer - Aug 1, 2024See UDN here: https://udn.unrealengine.com/0D5QP00000TtFaV0AV?fromCase=1 The issue is that in FMovieSceneSequencePlaybackSettings, the TickInterval struct is marked with an EditCondition to only be ...
[Groom] Very thin hair has incorrect raytraced shadow on edges
UE - Graphics Features - Lumen - Jun 8, 2020This only happens when 1) Hair Width is very small. e.g. 0.01 in the example 2) Light has raytraced shadow and Samples Per Pixel has a value > 1. e.g. 8 in the example The problem seems to be rel ...
Streaming Virtual Texture UDIN V Offsetting
UE - Editor - Content Pipeline - Import and Export - Jan 31, 2024UDIN virtual textures appear to have row 0 (U coordinate [0 - 1) swapped to the other side of the texture vertically. ...
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 ...