Unreal Engine Issues

SWorldPartitionEditorGrid2D causing editor to crash

"StaticFindFirstObject: Ambiguous object name" on delegates with timelines in packed level actors

PropertySet : changes in instancedstruct are not detected by the watch

Hi, I tried to use for a scriptable tool the watch property node for a struct. The objective for me was to offer to my user a view of a struct in the scriptable tool and have these modifications b ...

[AI] Navmesh tiles on different layers get removed while streaming out in WP Dynamic Modifiers Only navmesh

 Streaming out the navmesh and streaming the area back into the world before the GC runs causes the navmesh streamed back into the world to only have navmesh tiles on a layer with tiles that would b ...

Editor crash while saving asset during cook operation

It is possible to experience an editor crash in 5.5.4 when the cook process generates a warning that references an asset while the editor is saving. It seems that during a save operation, the code t ...

Assertion failed in FNetGUIDCache::CleanReferences during seamless travel after reloading primary asset package

Following this sequence of events, the ObjectLookup and NetGUIDLookup on the server's PackageMapClient will end up in a bad state. In the ObjectLookup Map, the primary asset's package will be mapped ...

Saving Behavior Tree with Blueprint task inheriting from native class invalidates Blackboard key when BP contains a function

A regression introduced in UE 5.6 causes Blackboard key selectors in Blueprint tasks to become invalid when the Blueprint inherits from a native subclass of UBTTask_MoveTo (or UBTTask_BlackboardBase ...

Blurry RVTs after camera jump

When using Runtime Virtual Textures (RVT) on landscape in UE 5.5+, nearby tiles may remain blurry (low-resolution mips) after launching PIE or making large camera jumps (e.g. via bookmarks or viewpo ...

Right-clicking in the Event Graph of a second Blueprint created using Create Blueprint Using This... will crash the editor

Right-clicking in the Event Graph of a second Blueprint created using Create Blueprint Using This... will crash the editor. Crash Report: [Link Removed] Call Stack:<unknown module>! KERNELBASE!Rai ...

Blueprint actor variables defined in code cannot be set in the editor

After creating a class in VS and creating a blueprint based on the class. Setting the actor variable in the BP's defaults tab does not save the setting. Instead it will show as none when trying to ...