Unreal Engine Issues

Editor can crash while performing a Hot Reload after a custom UClass class is added to the project

Performing a Hot Reload after creating a custom UClass class can result in a crash. This was reported on Linux, but reproduced on Windows. Additional testing will be done on Linux to confirm the is ...

Using ConstructorHelpers::FClassFinder in a GameMode constructor may result in a default value or crash if the level is reloaded multiple times.

Randomly selecting a character class from the GameMode constructor using ConstructorHelpers::FClassFinder can result in default or null character being set when the level is reloaded. It appears tha ...

SubwaySequencer crashes when launched in Standalone Game

SubwaySequencer is crashing when launching in standalone game Reported here originally:シーケンスの再生に関して ...

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" ...

Crash in RecreateClothingActors() when using MasterPoseComponent

As part of RecreateClothingActors(), the master pose component is not checked for a valid mesh and therefore when TransformComponent->GetComponentSpaceTransforms() is indexed into, crashes can occur ...

Lighting channels are not supported with tiled lighting

Reported via UDN ...

MediaPlayer failed to be open on Mac and IOS

Using nativized functions on buttons to spawn meshes causes assertion failure

An assertion failure is thrown when using nativized functions on an Android device. ...

Server crashes when client connects after Server has reloaded a sublevel with a deleted actor

UNetDriver::DestroyedStartupOrDormantActors maintains a list of deleted startup (and dormant) actors. This is used to notify clients that have joined the server of Actors that need to be destroyed ...

"Support Compute Skincache" throws an Assert for games on Linux

After enabling "Support Compute Skincache" in the project settings and packaging a game on Linux, the packaged game will throw an assert. Any setting that turns "Support Compute Skincache" on automa ...