Unreal Engine Issues
Unreal Engine Issues
TakeRecorder does not add a track to a level sequence when niagara FX is spawned
zComponent - Archive - Mar 5, 2024In UTakeRecorderActorSource::EnsureObjectTemplateHasComponent() function, MakeUniqueObjectName() generates the same name of a component which CachedObjectTemplate for TakeRecorder has already had. T ...
Crash when Importing .OBJ using the File > Import into Level Option
UE - Editor - Content Pipeline - Import and Export - Sep 6, 2016This JIRA is being entered as a result of it being one of the top crashes in 4.13.0. Error message: Access violation - code c0000005 (first/second chance not available) Source Context: 1671 ...
Landscape: When updating Physic Material on a landscape layer info object, the physic material is not propagated correctly
UE - LD & Modeling - Terrain - Landscape - Apr 4, 2019This will result in not getting the Phys Material when doing collision query. Info from the UDN "Having stepped through the ULandscapeLayerInfoObject::PostEditChangeProperty I can see that the U ...
Create a "Input Device User Mapping Schema" of some kind for PC
UE - Gameplay - Input - Feb 13, 2024When you are playing a game on PC (especially local multiplayer) many developers want to change how input devices are "mapped" to different players. For example, a single player game might want the ...
[CrashReport] UE4Editor_Slate!SMenuAnchor::SetIsOpen() [smenuanchor.cpp:372]
UE - Editor - UI Systems - Slate - Nov 2, 2017This is a trending crash coming out of the 4.18 release, and may be a regression. Users have not provided any descriptions of their actions when the crash occurred. Source Context 361 ...
Lyra: When a bot fails to fire their weapon, all bots play their weapon fire fail animation montage
UE - Gameplay - Jun 12, 2024UDN reported: Lyra bots will sometimes play their weapon fire failure anim montage "randomly". The reporting licensee found that this happens when another bot in the level is reloading. The gamepla ...
Translucent Wireframe Materials Exhibit TSR Aliasing/Crawling Due To Incorrect Velocity Rendering When Set to Output Depth And Velocity
UE - Rendering - Features - Nov 27, 2025Note that this bug potentially also affects a wide variety of material / geometry setups; however, a translucent wireframe setup is currently the main reproduction case. The issue may also be notice ...
FStateTreeExecutionContext::GetDebugInfoString() outputs wrong info and crashes when using linked state trees
UE - AI - Debugging - Apr 17, 2025When using State Trees, the AI Debugger can be accessed during play to show information about their current execution state. If a behavior tree is currently in a state that references a linked tree, ...
Crash when enabling dynamic branch on static switches in Post Process Materials
UE - Rendering - Architecture - Materials - Jun 28, 2023[Link Removed] Some functions to access parameters don't take into account the newly added runtime static switch parameters. It should be straightforward to fix these up: void UMaterialInstance:: ...
Input Mapping Context entries can get into a corrupted state when swapped with another entry that has a Combo Trigger.
UE - Gameplay - Input - Aug 23, 2024This behaviour was working correctly in version 5.3. This issue happens inside an InputMappingContext DataAsset from the EnhancedInput system. We need at least two mappings entries. One of the entri ...