Unreal Engine Issues
Unreal Engine Issues
Compiling any material in UE 5.5.1 without ShaderCompiler JobCache results in a crash
UE - Rendering Architecture - Shaders - Jan 15, 2025Compiling any material with r.ShaderCompiler.JobCache=0 causes ShaderCompileWorker to crash. Reproduction steps cause a crash during Editor startup, but this bug may affect other scenarios where mat ...
Popping Ribbon UVs
UE - Niagara - Mar 10, 2025Please see the Additional Link for related UDN information. The UV popping described can be subtle, depending on settings; it's affected by spawn rate and GPU vs CPU. The popping shown in the gif t ...
Mobile VR App Crash with Monoscopic Far Field and Multi-View enabled
UE - Platform - Mobile - Nov 23, 2018Mobile VR (Oculus Go) App Crash with Monoscopic Far Field and Multi-View enabled Workaround: Do not use Monoscopic Far Field and Multi-View at the same time Also confirmed in 4.22 Main @ CL 45 ...
SetWorldOrigin in console command crashes editor
UE - Gameplay - May 6, 2016Using the SetWorldOrigin console command crashes the editor. Frequency 3/3 Crashreporter N/A Regression (yes) issue (does not) occur in 4.11.2 ...
Import Threashold Time setting ignores decimal entries
Tools - Aug 10, 2016Import Threshold Time setting in Editor Preferences does not accept values with a leading decimal point (.25 vs 0.25). UEditorLoadingSavingSettings::AutoReimportThreshold in EditorLoadingSavingSett ...
Editor primitives render incorrectly in stereoscopic with instanced stereo
UE - Platform - XR - Aug 17, 2016Trigger box icons move around when oculus head movement is used. Found in //UE4/Release-Staging-4.13 @ 3090357 QA-Promotion map Edit: 08-22: This affects volumes as well as their editor icons, upd ...
Marking a Blueprint as Deprecated Causes Existing Instances to be Removed on Level Load
UE - Gameplay - Blueprint - Oct 13, 2016Enabling the 'Deprecated' option in a blueprint's Class Settings causes all existing instances of it to be deleting upon loading any levels that contain the blueprint. Found in 4.13.1. Reproduced i ...
Tessellation Flicker When Viewed from a Distance
UE - Graphics Features - Sep 26, 2016Tessellated objects when viewed from afar flicker. When spawned into QA-Materials the player is the perfect distance away from the tessellated object for the cube to flicker. Found in both Binary 4 ...
Nav Mesh Not Generating on Static Mesh Created From BSP
UE - AI - Oct 12, 2016Nav Mesh is not being generated on a static mesh that was converted from a BSP. Found in 4.13.1. Reproduced in 4.12.5 and 4.14 Main CL 3156733 Attached is a screenshot showing the difference betw ...
Foliage icons do not grey out when set to inactive
UE - World Creation - Worldbuilding Tools - Foliage - May 16, 2016Foliage icons do not grey out when set to inactive through the foliage mode window. Note This error occurs in 4.11 and 4.12, but is responding as expected in 4.10.4 (icon is greyed out) Regressi ...