Unreal Engine Issues
Unreal Engine Issues
Can Ever Affect Navigation does not detect updates to collision settings at runtime
UE - AI - Jan 27, 2016When a mesh has its collision updated during runtime the navigation around the mesh does not update. Workaround: If the mesh is set to simulate physics then updates to its collision will update nav ...
Translucent Materials no longer reflect light when using Forward Lighting variable
UE - Graphics Features - Jun 7, 2016Translucent materials are no longer showing light reflections in scene when using r.forwardlighting 1 with lights. This is a regression from functionality in 4.11.2. This no longer works with 4.12 ...
Map Get Node Pins In Niagara Module Scripts Can't Search For Standard Data Types
UE - Niagara - Mar 16, 2020This wasn't like this in 4.24 (see attached images). If you create a variable Engine.Owner.Position the search will find it however. Found in 4.25 Preview 2. Reproduced in 4.26 Main. ...
Niagara Scalability Crash When Processing Significance
UE - Niagara - Jun 4, 2025Method FNiagaraScalabilityManager::ProcessSignificance() iterates on indices from Context.SignificanceIndices and uses them to access the State and ManagedComponents arrays. It can then decide to cr ...
Aligning comment boxes does not move the nodes within them
UE - Gameplay - Blueprint - Nov 13, 2015Aligning comment boxes does not move the nodes within them. Reproduced in 4.10.0 binary and Main (CL# 2765781). Not a regression: Blueprint node alignment was not available prior to 4.10. ...
Investigate crash reported with 4.16 on Sony Xperia Z3 running Marshmallow
UE - Platform - Mobile - Jun 28, 2017A user has reported a crash that is occurring on his Sony Xperia Z3, https://answers.unrealengine.com/questions/667998/4161-dev-build-app-crashes-on-start-unfortunately.html The user has attached ...
Teleport only affects static mesh of destructible meshes, collision remains at original location
UE - Simulation - Physics - Destruction - Sep 15, 2015Teleporting a destructible mesh only transports the mesh of the object, the collision remains where it was originally located. Further, if the player runs into the collision, the static mesh will re ...
ETC2 Android devices are no longer supported in the Google Play Store as of 4.14
UE - Platform - Mobile - Nov 29, 2016When uploading ETC2 packages to Google Play Store, it shows that 10712 devices were removed as supported devices and 332 remain. They did state in their AnswerHub that the unsupported devices still ...
Opening Persona causes editor to crash on Linux
UE - Platform - Linux - Nov 17, 2016Attempting to open a skeletal mesh or animation in Persona causes the editor to crash. Regression: Yes Working: 4.13.2 - CL 3172292 Broken: 4.14.0 - CL 3195953 ...
UE5.4 Regression - crash when disabling shader optimization while raytracing is enabled on D3D12
UE - Rendering Architecture - Shaders - Jul 15, 2024Certain interactions between a Rect Light with a Light Function and a Post-Process volume lead to a check() when compiling a Ray Tracing PSO for tracing lights. This check() only happens when shader ...