Unreal Engine Issues

The engine crashes when adding a new brush at newly created level by a specific way.

issuesFBSPOps::csgAddOperation returns null if BuilderBrush has no valid polys.The creating level on content browser never calls "UEditorEngine::InitBuilderBrush(NewWorld);". But "New level" button o ...

Editor Crashes When Attempting to Maximize Standalone Window While a Startup Movie is Playing

The editor is crashing when clicking the Maximize button on a standalone window when a startup movie is playing. ...

Crash upon clearing Sequence Record settings in C++ with the window open

Resetting the Sequence Record settings in C++ while the Sequence Recorder Window is open causes the editor to crash Regression?: No This also occurs in 4.13 ...

[CrashReport] UE4Editor-D3D12RHI!D3D12RHI::VerifyD3D12Result(long,char const *,char const *,unsigned int,ID3D12Device *,FString)

Generated from CrashReporter ...

Adding a new component to a parent class breaks child Blueprints

See UDN(308147): [Link Removed] ...

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 ...

[AI] Destroying an actor while using pooled actors with MassActorSpawnerSubsystem causes a nullptr exception crash

If an actor that is used in the pooled actor list of UMassActorSpawnerSubsystem is destroyed, it causes a nullptr exception in UMassActorSpawnerSubsystem::SpawnOrRetrieveFromPool. The subsystem atte ...

Nested PackedLevel in Duplicated LevelInstance check failure

Crash when calling "Is List Item Expanded" For an Item in a list view

When calling the function "Is List Item Expanded" on an object in a list view the editor will crash ...

Crash: Corrupt asset/map data is no longer correctly detected and handled

Corrupted data was previously handled gracefully without crashing, but in 4x14 the same data crashes the editor. ...