Unreal Engine Issues
Unreal Engine Issues
Light Propagation Volumes Not Affected by Emissive Area Light
UE - Graphics Features - Aug 1, 2018The light propagation volume is not affected by a material with emissive area light enabled. Found in 4.19 CL# 4033788, 4.20 CL# 4233996, 4.21 CL# 4246589 ...
UE4.11.1 Crashes After loading the Substance Plugin
UE - Foundation - Core - Apr 13, 2016Regression: UE4.11.1 Crashes After loading the Substance Plugin. This did not Occur in previous versions of the Engine. Reported on Macs and PCs Full Error Message: Fatal error: [Link Removed] [Lin ...
Memory leak when Lumen is disabled but r.MeshCardRepresentation=1
UE - Graphics Features - Lumen - Jul 29, 2024When Lumen is disabled, but the cvar "r.MeshCardRepresentation" is set to 1, Lumen will continuously enqueue object removal from the Lumen Scene, without ever emptying the array of primitives to rem ...
Multitouch on Windows offsets touch index by 1, starting at TouchIndex_2
Tools - Oct 18, 2016Touch input on Windows devices will start at touch index 2 instead of touch index 1, like other touch devices. ...
Shots with Time Scale less than 1.0 do not render from master sequence
UE - Anim - Sequencer - Sep 20, 2019Setting a shot's time scale to less than 1.0 will cause it to not be rendered. ...
Upgrading from 4.22 to 4.23 can break emitter inheritance
UE - Niagara - Sep 20, 2019Copied emitters will have their inheritance broken when migrating from 4.22 to 4.23. ...
Navigation becomes incorrect after flipping a widget via scaling (-1)
UE - Editor - UI Systems - Dec 22, 2015If the user flips a widget using the scaling feature in umg (scaling the widget by -1) this will cause the navigation for the widget to becomes incorrect. ...
Crash Generating Proxy Mesh with Transition Screen Size set to 1
UE - World Creation - Worldbuilding Tools - HLOD - Nov 18, 2016Crash occurs when attempting to Generate Proxy Meshes with Transition Screen Size set to 1. ...
Skeletal Mesh Collapses with OpenGL ES3.1 on Tegra K1 devices
UE - Platform - Mobile - Oct 18, 2016When launching to an Android device that supports ES3.1 skeletal meshes seem to collapse in game. ...
Deadlock running anim modifiers that affect bone tracks on multiple sequences
UE - Anim - Runtime - Mar 11, 2025Running anim modifiers that affect bone tracks can deadlock the editor when applied to multiple anim sequences. ...