Unreal Engine Issues

UE4Editor is crashing after user builds lighting

Issue reported by user that they are experiencing consistent crashes in UE4Editor have building lighting. ...

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 sometimes occurs when enabling the Gravity tool on part of a Sketchfab object.

Current state Triggering Gravity on element from Sketchfab object's tree, may result in crash. For 100% reproduction rate, download 'Rank 3 Police Unit' object and apply Gravity to its element 'Rank ...

Editor crashes when setting return value pin to object variable in widget blueprint

Editor crashes when attempting to set an object variable to a return value within widget blueprints. Frequency: 2/2 Crashreporter: [Link Removed] ...

Adding a new component to a parent class breaks child Blueprints

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

Iris - Ensure in MarkObjectDirty when calling multicast from component owned by bOnlyRelevantToOwner actor

It seems as though the component is in scope for more than one connection, despite its owner only being relevant to one. Enabling Net.Iris.Filtering.ValidateNobSubObjectInScopeWithFilteredOutRootObj ...

[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 ...

Use of SpiralBlur-SceneTexture MaterialFunction in translucent material results in compile errors

This appears to be new in 4.25. ...

Nested PackedLevel in Duplicated LevelInstance check failure

LevelSequence Editor consumes input, even if the user last focused the Level Viewport

LevelSequenceEditor has input priority over the Level viewport and other editor modules even though the Level viewport has been the last one selected. An example would be a cut operation. If you ha ...