Unreal Engine Issues
Unreal Engine Issues
Body Instance property changes made in construction scripts are not applied
UE - Simulation - Core - Jul 17, 20207054614 was submitted to fix an issue with not being able to modify physics properties on instanced blueprints child components. This is related to [Link Removed] ...
TranslucentVolumeAmbient is darkened in InjectTranslucencyLightingVolume pass when using VSMs with r.Shadow.Virtual.ForceOnlyVirtualShadowMaps is Off
UE - Graphics Features - Shadows - Nov 18, 2024CSM targets are still created and affect the InjectTranslucencyLightingVolume pass when moving in a project that only uses VSM causing over brightening of fog planes and other translucent meshes. r ...
Cloth - Assertion failed: SimData->LODIndex != INDEX_NONE && SimData->LODIndex <= LOD when using the rewind debugger with multiple LODs cloth
UE - Simulation - Visual - Feb 19, 2026The LOD switching when the simulation is paused could still be causing problems when the simulation is paused while the LOD indexes are going up because there is no LOD Bias mappings by default. Se ...
Ensure caused by edits to nested structs
UE - Gameplay - Blueprint - Dec 27, 2016Edits made to a struct that is a member of another struct can cause the parent struct to no longer compile and cause save errors. ...
Animation Modifiers that contain a null Animation Sequence value cause the Engine to crash when applied to an Animation Sequence
OLD - Anim - Nov 14, 2018When an Animation Modifier passes a null Animation Sequence value to an Animation Sequence the Editor will crash. This is a regression from 4.20.3 (CL-4369336). This was reported and tested in 4.21 ...
Engine Crashes when saving a project to disk space is full
UE - Foundation - Core - Feb 14, 2017I ran out of space in my D drive and my project autosaved and received the attached error message This is NOT a regression ...
The 'Console Variables' option does not Output an HTML file
Tools - Aug 23, 2016No HTML file is created when using the newly added 'Console Variables' help menu option. This option is the same as entering 'Help' into the console command window. Neither of these options produce ...
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 ...
Deactivate Then Activate Ribbon Emitter Causes Flicker
UE - Graphics Features - Oct 21, 2016When setting a particle system to be active after deactivating the remaining particles still floating in the air from earlier will flicker. This is harder to reproduce when smooth frame rate is enab ...
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 ...