Unreal Engine Issues

Crash when unloading Lighting Scenario Streaming Level

If a sub-level is set as a Lighting Scenario in the Levels tab, calling Unload Stream Level will cause standalone / packaged games to crash. Regression: No - Lighting Scenario not available before ...

Crash After cutting and pasting a blend radius track in sequencer

Crash After cutting and pasting a blend radius track in sequencer ...

[CrashReport] Mac crash - FRCPassPostProcessInput::ComputeOutputDesc()

This is a new Mac callstack that just appeared after the 4.17.2 hotfix. The callstack shares similarities to older Windows crashes and may be related:https://jira.it.epicgames.net/browse/UE-42135ht ...

LIVE: Crash when stopping simulation after using Keep Simulation Changes feature.

A user is experiencing a crash when using the "Keep Simulation Changes" feature in the Editor after running a simulation of their project. The user allows the simulation to run briefly before pressi ...

Unable to interact or collide with geometry collection after Removal on Sleep or Break timer finishes, yet unbroken piece continue to render

Context: A static mesh is able to have a geometry collection generated from it using the Fracture editing mode. It can be fractured in many different ways, and when acted upon by a chaos field agent ...

BuildPatchTool crashes on Mac and Linux when building android or ios with multiple chunks

"It seems that deallocation of TLazySingleton<FInternationalization> causes unhandled exception. If DISABLE_LAZY_SINGLETON_DESTRUCTION=1 is provided - the build completes successfully" ...

Access Violation crash deleting a Widget Blueprint with an unsaved Animation track - FSequencer::Tick()

Encountered an Access Violation crash while deleting an Widget Blueprint with an unsaved Animation Track. The callstack references FSequencer::Tick(). I was not able to reproduce this issue in UE4/ ...

Auto Reimport crash with some file paths

Auto Reimport source paths can cause a crash with the editor. I couldn't narrow down in my limited testing what would cause the crash vs what would not with these file paths. The one in my attached ...

Crash can occur in the Ansel plugin when setting Use Client Side Camera Updates to false in Player Camera Manager

Setting the `bUseClientSideCameraUpdates` property in a `PlayerCameraManager` class to false can result in a crash in the Ansel plugin because `GEngine->GameViewport` may be NULL. Another user has ...

Crash on Galaxy S7 devices with Mali GPU (SM-G930F / SM-G935F)