Unreal Engine Issues

[AI] StateTree can get stuck in a loop when a sub-tree returns Tree Succeeded

After a change to how StateTree handles Sub-trees returning succeeded, StateTree can now get caught in a loop when trying to transition out of the StateTree. Sub-tree completion and status should tr ...

Actor Soft Reference in LevelInstance does not have a Referenced Object during PIE

When setting an actor on a level to the SoftObjectRefence(Type:Actor) variable and outputting the object name as a PrintString, the object name cannot be correctly obtained if the set actor is place ...

[Ensure] LoadStreamingLevel and UnloadStreamingLevel are called at the same tick

There is no particular error. Developer can ignore it. ...

PCG Graph on 2x2 Landscape incorrectly displays weight on paint layers

In my example picture I have "Grass" set as the target attribute area but the debug cubes are appearing on the dirt and snow as well.  This only happens when the landscape subsections are set to 2x ...

Placing meshes on World Partition Grid causes them to load in from any distance

This is not a regression as in 5.1.1 the meshes will load and unload in their proper cell squares when entering and exiting the load distance threshold ...

Favorites category in the Palette Panel of a Widget is no longer appearing

This is not a regression tested in //UE5/Release-5.1 CL23901901 When Favoriting a Component from the Palette panel of a Widget the Favorites category appears then disappears. For the brief moment i ...

Actor attached to other actor in LevelInstance has very large bounds

Attached actors do not return to LevelInstance space at the end of LevelInstance editing, and bounds contains level instance offset location. This results in huge bounds. My workaround is:  void FL ...

Combo triggers do not fire the "Completed" event

FTabManager::FindPotentiallyClosedTab Crash Due to Invalid Array Indexing

As you can see from the above callstack it appears that calling RestoreArea can call FindPotentiallyClosedTab again higher in the stack, which can Remove() an entry from CollapsedDockAreas- this cau ...

GeometryCollectionComponent take +1 frame to be marked as dirty

Debugging the code I have been able to verify that in GeometryCollectionComponent.cpp line:2318, the if condition happens every two frames. I think DynamicCollection is not setting all the frames a ...