Unreal Engine Issues
Unreal Engine Issues
Inconsistent behavior with Register State Branches
UE - Editor - Aug 31, 2023ISourceControlProvider::RegisterStateBranches(...) doesn't reliably warn on conflicts ISourceControlProvider::RegisterStateBranches(...), specifically FPerforceSourceControlProvider, is supposed to ...
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 ...
Sub Animation Blueprint causes crash when compiling character BP
OLD - Anim - Dec 9, 2016Error message: Access violation - code c0000005 (first/second chance not available) Source Context: 931 OutputCurveMap(AnimationCurves[(uint8)EAnimCurveType::AttributeCurve], Canvas, Displa ...
Crash On Hot Reload with Custom World Settings and HISM Class
UE - Gameplay - Blueprint - Sep 8, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: IsValid() [Link ...
Use Per Property Manually Overridden Texture Sizes when Merging Materials generating HLODs only creates 1024 Texture Sizes
UE - World Creation - Worldbuilding Tools - HLOD - May 3, 2017Texture sizes incorrect and always output 1k resolution textures when creating HLOD proxy meshes and using the per property manual override for texture sizes. I have attached a screenshot which exh ...
Nanite displacement issue when using along non-uniform scaling
UE - Rendering - Features - Nanite - Feb 26, 2026Nanite Tessellation displacement direction is incorrect for landscapes with non-uniform scales. It seems to use the normal from the unscaled landscape, which can result in the displacement causing t ...
Atmospheric Fog cannot be toggled to hidden in the Scene Capture 2D's detail settings
UE - Graphics Features - Apr 7, 2015Atmospheric Fog cannot be toggled to hidden in the Scene Capture 2D's detail settings. All other setting will toggle correctly. ...
Creating a copy of BSP after fliping it in geometry edit mode cause the copy to be invisible
UE - LD & Modeling - Modeling Tools - BSP - Aug 29, 2014Branch Build Label UE4-Main Promoted-CL- 2270796 DESCRIPTION: If a player goes into geometry edit mode and flips a bsp then makes a copy of it the copy will appear invisible ADDITIONAL NOTES: A ...
[CrashReport] UE4Editor_Engine!FDistanceFieldAsyncQueue::ProcessAsyncTasks() [distancefieldatlas.cpp:824]
UE - Graphics Features - Jul 20, 2017This is a common crash affecting users in 4.16. User Descriptionsremoving Inventory system form level.delete assets when was compiling shadersDeleting folderDeleting folder. Source Context 810 ...
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 ...