Unreal Engine Issues
Unreal Engine Issues
[AI] Crash when gathering heightfield geometry on worker thread
UE - AI - Navigation - Jun 25, 2025From the body of the ticket: We aim to do as much of the work off the game thread as possible to avoid impacting frame rate. We've recently found a crash during collection of the geometry slices fr ...
"Create Layers From Assigned Materials" assigns existing LayerInfos at random
UE - Graphics Tools - Terrain - Landscape - Jan 17, 2025The automatic landscape layer assignment that is performed when using "Create Layers From Assigned Materials" just uses the first layer info it finds with the layer's name, which leads to maps refer ...
The collision is wrong when the static mesh scale is set as negative value
UE - Simulation - Physics - Feb 15, 2022I checked the c.haos code quickly. I think it caused by the function "bool FInitBodiesHelperBase::CreateShapesAndActors()". In this function, the CreateActor_AssumesLocked function will ignore the s ...
Collision channel settings are not recognized in Standalone
OLD - Anim - Oct 18, 2017Object instances that override the parent blueprint's collision settings are recognized in PIE but ignored in standalone or when running from the command line with -game NOTE: This appears to only ...
Dynamic NavMesh disappears when loading/unloading SubLevels
UE - AI - Nov 9, 2018A DynamicNavMesh within a NavMeshBoundsVolume placed in a SubLevel will disappear if loading/unloading another SubLevel that has completely nothing to do with the DynamicNavMesh. Using a setup with ...
Installed Editor doesn't package the right target if Marketplace plugin are installed before first launch
UE - Platform - Jun 18, 2024Something is wrong with the TargetInfo.json file generated when they are some Marketplace plugin installed. The client reported this workaround: Backup the plugins found in Engine\Plugins\Marketp ...
iOS - Windows - Code projects fail to launch and package
UE - Platform - Mobile - Aug 1, 2016Attempts to Launch On to or Package for iOS fail with: LogPlayLevel: Program.Main: ERROR: AutomationTool terminated with exception: AutomationTool.AutomationException: Unabled to build Project C:/Pr ...
The Remove-On-Break feature, set on Fracture Mode on Geometry Collections, stops shrinking and shows strange behaviors
UE - Simulation - Physics - Destruction - Oct 15, 2024The Remove-On-Break (ROB) feature, set on Fracture Mode on Geometry Collections (GC), was supposed to make the particle shrink until it vanishes. When the GC goes to sleep the shrinking stops and sh ...
Changing value on float input pin does not automatically provide decimal point
UE - Gameplay - Blueprint Editor - Jun 8, 2017Entering a whole number value to a float input does not create a ".0" at the end. This was noticed as it causes a small quality of life issue with orphaned pins, where the user can't simply type th ...
App crashes when adding more than 4 splash screens with Gear VR
UE - Platform - XR - Nov 28, 2017App appears to crash when adding more than 4 splash screens when using Gear VR. ...