Unreal Engine Issues
Unreal Engine Issues
AreaNavModifiers generated by SplineNavModifierComponent have the component-to-world transform incorrectly applied twice
UE - AI - Navigation - Aug 15, 2025USplineNavModifierComponent was made available in UE 5.4. It generates several FAreaNavModifier instances covering a region with a certain thickness around a USplineComponent, and worked correctly u ...
[CrashReport] Mac/Metal Intel compiler crash - UE4Editor-MetalRHI.dylib!CreateMTLRenderPipeline()
UE - Graphics Features - Oct 27, 2017Mark S: This is an Intel compiler failure on macOS 10.12.6. Callstack from LogAssertion failed: [File:/Users/build/Build/++UE4+Release-4.18+Compile/Sync/Engine/Source/Runtime/Apple/MetalRHI/Privat ...
Using a Macro to access a variable from another Actor causes a crash in Standalone
UE - Gameplay - Blueprint - Jun 8, 2015Using a Macro to access a variable from another Actor causes a crash in Standalone. This does not seem to affect any other preview in editor, nor packaged games. Reproduced in 4.7.6, 4.8 Preview 4, ...
Shipping build crash when unplugging then replugging Oculus HMD
UE - Platform - XR - Nov 9, 2016Game crashes in shipping build when un-pluging the Oculus HMD, then plugging it back in. Confirmed in 4.13.2 from the launcher, did not repro via same steps in 4.14 preview 3 ...
OpenGL: Nvidia: Crash when using foliage tool
UE - Platform - Linux - May 7, 2015As reported by user, using foliage tool in a first person project eventually crashes it. "Currently, any attempt to render objects created with the foliage tool crashes the UE4 editor on my machine ...
tvOS/IOS: Fails to Build with dSYM Options Enabled Due to DsymExporter Erroring Out
UE - Platform - Mobile - Jan 22, 2019When attempting to package for tvOS or iOS with the generate dSYM options enabled, numerous instances of the following errors occur:[2019.01.21-20.53.35:739][138]UATHelper: Packaging (tvOS): [2019 ...
First Person Example Project Crash when character movement component is cast in viewport.
Tools - Jul 23, 2019Crash is caused by incorrect cast to display ActorComponent in viewport (gizmo used to move it should not be present) ...
Differences in DistanceToNearestSurface and DistanceFieldGradient results between 4.27 and 5.0
UE - Graphics Features - Apr 27, 2022In the UE5 case, we end up seeing very harsh lines in both the gradient and the distance to nearest surface examples whereas the results in 4.27 appear smooth. It was also interesting to observe c ...
Duplicating many Actors at once in a Level Instance while in Level Instance Edit will result in a jumbled mess of Actors on the Persistent Level
UE - World Creation - Worldbuilding Tools - Level Instances - Feb 12, 2025Duplicating many Actors at once in a Level Instance while in Level Instance Edit will result in a jumbled mess of Actors on the Persistent Level. The licensee has encountered this in Unreal 5.4 and ...
PlayerController::PlayDynamicForceFeedback called through code does not fire
UE - Gameplay - Input - Feb 25, 2016Calling PlayDynamicForceFeedback in code does not affect controller rumble. ...