Unreal Engine Issues
Unreal Engine Issues
Force Feedback has incorrect duration on iOS devices
UE - Platform - Apple - Sep 16, 2024The user also describes not being able to tell the difference between a force feedback value of 0.3 and 1,0 on iPhones Note: This is likely an issue somewhere in FIOSInputInterface::SetForceFeedb ...
Incremental macros are off by one when using a variable
UE - Gameplay - Blueprint - Jul 24, 2015When using the increment/ Decrement macros they are off by one. When using the ++ macro the return value is one higher than the actual variable and 1 lower when using the – macro. ...
Open street map building don't cast shadows in raster mode
TM - Rendering - Feb 14, 2025Reproducible with cascaded and virtual shadow maps. Seems to be a regression from 2024.1.2. All TM 2025.x version have this issue. [Image Removed] ...
Child Animation Blueprints Do Not Get Recompiled Correctly
UE - Gameplay - Jan 7, 2020The child of an animation blueprint is not properly recompiled when the it's parent is compiled. Found in 4.24.1 CL#10757647 ...
Depth Fade Particles are not rendered on iOS when Mobile HDR disabled
UE - Graphics Features - May 7, 2015Depth Fade and Fresnel inputs in a Particle's Material will result in the particle not rendering unless Mobile HDR is checked true on an iOS device. Also Reproduced in Main Promotable-CL-2535351 S ...
Cloth meshes in Content Examples spinning incorrectly.
UE - Simulation - Physics - Character - Jan 25, 2017In the Cloth level in Content Examples, the cloth meshes at display 1.6 (Self Collision) are spinning and are being lifted into the air. This isn't consistent with the same assets in //UE4/Main. ...
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 ...
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 ...
Offset Root Bone Node needs reconstruction from velocities
UE - Anim - Jul 16, 2025The experimental Offset Root Bone node does not respect velocities, meaning that it does not work when a character is based on a moving platform. The capsule will rotate with the platform, but the r ...
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. ...