Unreal Engine Issues
Unreal Engine Issues
Crash assigning static mesh to LightWeightInstanceStaticMeshManager
UE - Gameplay - May 21, 2021Crash occurs when the user assigns a static to the Instanced Static Mesh Component in a LightWeightInstanceStaticMeshManager. I couldn't reproduce this with an actor blueprint with an ISMC or HISMC ...
Build Warning when HotReloading - LogUObjectGlobals:Warning: Guid is already used by
UE - Gameplay - Blueprint - Sep 12, 2016Changing class code causes class instance placed in the viewport to produce the warning message shown below upon hot reload. Also reported that callstack occurs but does not crash the editor. The ...
Nanite Instanced Static Meshes lost selection outlines in UE5.5
UE - Graphics Features - Nanite - Mar 6, 2025Nanite ISMs lost selection outlines in UE5.5 Actors having an ISM component which uses a static mesh with nanite do not get a selection outline when selected in the editor. Having Nanite is essentia ...
Bone names of ~100 characters or longer crash the editor when baking to control rig
UE - Anim - Rigging - Control Rig - May 15, 2025This is an issue with inconsistencies over rig names and how control names are generated. We expect that a control name will be appended with _CONTROL or _CURVE_CONTROL. But because URigHierarchy: ...
Crash on Linux and Windows with Vulkan when adding Atmospheric Fog to a Level
UE - Graphics Features - Dec 5, 2018Adding an instance of Atmospheric Fog to a Level causes the Editor to crash on both Linux and Windows when using Vulkan. There is a different callstack when SteamVR is enabled on Linux which is also ...
Assert caused by using FText::FromStringTable to initialize a FText property in the constructor of a UStruct based off FTableRowBase
UE - Foundation - Core - Jan 4, 2019When using FText::FromStringTable to initialize an FText variable in the constructor of an FStruct that inherits from FTableRowBase, an assert is caused due to recursion. The assert is as follows:As ...
Crash occurs while replacing a Widget Component with a user created Text Block
UE - Editor - UI Systems - UMG - Aug 18, 2022This is not a regression. Tested in //UE4/Release-4.27 CL18319896. The crash occurred. Crash occurs while replacing a Widget Component with a user created Text Block blueprint. ...
"Invalid resource entry creating uniform buffer" when running Vulkan on Mobile
UE - Platform - Mobile - Apr 30, 2019Android projects in 4.22.1 crash on launch with Vulkan enabled. Did NOT reproduce in 4.23 MAIN at CL 6156332 4.22.1 release CL is the same as a related fix for this ( [Link Removed] ) ...
UE5 Main - Editor crashes when creating a Data Table
UE - Editor - Workflow Systems - Feb 14, 2022Doesn't occur in UE5 Release or UE4.Can't attach logs/crash information I'm encountering an RHI crash within UE5 Main at the moment. This issue seems to be caused by a commit from last year that ...
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 ...