Unreal Engine Issues
Unreal Engine Issues
Shadows become disabled for Datasmith imported lights on resync
TM - Interoperability - Aug 4, 2026Reported in SF [Link Removed] For Datasmith models containing lights, resynchronizing the model after any changes will cause any lights that had shadows enabled prior to the sync to have that setti ...
A camera set to Orthographic projection mode with a negative Ortho Width will crash the editor on PIE
UE - Graphics Features - Jan 22, 2015A camera set to Orthographic projection mode with a negative Ortho Width will crash the editor on PIE. Reproduced in Main (CL-2412886) Crash Report: [Link Removed] Call Stack:<unknown module>! UE ...
Crash when Simulating in Editor after Painting Foliage
UE - Editor - Workflow Systems - Nov 29, 2016The engine crashes when simulating in the editor after painting foliage instances using the Foliage Tool. An important thing to note is that this crash does not occur if you switch out of the 'Foli ...
[CrashReport] PhysX3_x64!physx::PxsNphaseImplementationContext::unregisterContactManager() [pxsnphaseimplementationcontext.cpp:644]
UE - Simulation - Physics - Mar 6, 2017This crash is occurring in a developer's packaged project for their end-users. End-user comments are below (unique to the specific project)The game started flickering and then crashed!I set down a ...
Widget blueprint details panel appears to jitter when dragging widgets in the designer tab
UE - Editor - UI Systems - Feb 1, 2019When clicking and dragging a widget in the designer tab of a widget blueprint some options in the details panel will begin to move/shake/jitter/readjust. ...
Input Axis Mapped to 'Pinch' no longer sends Axis Value
UE - Platform - Mobile - Feb 15, 2019Axis Event mapped to pinch no longer returns values. Working in 4.19 Confirmed on Android + iOS Confirmed in MAIN 4.23 @ CL 4961509 ...
In Isometric Staggered and Hexagonal Staggered Projection Modes redundant rectangle is rendered
UE - Gameplay - Paper2D - Sep 25, 2020About issue:Similarly issue also can be seen in Isometric Staggered projection modeSuch issue does not occurs in Orthogonal and Isometric Diamond projection modesIn viewport in UE4Editor this redund ...
Recently created projects using the Live Launcher do not show up in the "My Projects" menu of the Launcher
Portal - May 26, 2021Recently created Projects not showing up in the Launchers "My Projects" menu. Recently Created projects also do not show up in the editors projects menu [Link Removed] ...
CheckDefaultSubobjects() appears to not properly validate Blueprint Class instances
UE - Gameplay - Blueprint - May 17, 2016It looks like maybe CheckDefaultSubobjectsInternal() isn't set up to handle non-native (i.e. Blueprint) class types? As well as AActor::CheckActorComponents() perhaps? ...
Static variable declaration causes unresolved external errors when calling FRootMotionMovementParams functions
OLD - Anim - Jan 11, 2017Attempting to call a FRootMotionMovementParams function results in an unresolved externals error on compile because of the static FVector RootMotionScale variable. Workaround: In source, removing s ...