Unreal Engine Issues

SpringArmComponent with "Use Camera Lag Substepping" does not handle fluctuating frame rates correctly

The description of SpringArmComponent's "Use Camera Lag Substepping" option says "sub-step camera damping so that it handles fluctuating frame rates well". However, as noted and explained by a licen ...

USplineComponent still editable in viewport despite setting as "read-only".

A spline component continues to be visible and editable in-editor despite all attempts to disable the functionality through the component's settings or uproperty specifiers. ...

In-editor hitch when deleting one actor in a world with many loaded actors

When editing a level with many actors (1000+), deleting an actor results in a noticeable hitch: the editor becomes unresponsive for seconds. This hitch becomes longer the more actors are loaded and ...

The pak file specified in PakFileRules is not created correctly

The rules by which chunks are created are ambiguous and currently do not ensure that both PakFileRules and PrimaryAssetLabel settings are reflected. In this sample, depending on the PrimaryAssetLabe ...

BP property initialization fast path does not handle non-instanced properties assigned to default subobjects correctly

Non-instanced object ref properties are incorrectly being skipped at property initialization time when Blueprint class instances are spawned with the fast property initialization path enabled. This ...

Toggle Folder Visibility Inconsistent in Scene Outliner With Search

In the scene outliner, if you add a folder with one visible actor in it, and filter out some of the actors, users are unable to toggle the visibility of the folder anymore, or they are only able to ...

Make literal container nodes (e.g. MakeArray) do not cast object ref output terms linked to interface-typed input pins.

As with most nodes, object reference outputs can be directly connected to interface-typed inputs on "make container" nodes (e.g. "MakeArray") if the object's class type implements the interface clas ...

CachedMaxDrawDistance value are not updated by CullDistanceVolume in persistent Level

in PIE, RerunConstructionScript() is executed and actor's CachedMaxDrawDistance is updated as expected. in packaged game, RerunConstructionScript() is not executed  so, CullDistanceVolume is not u ...

Merge actor issue with similar materials

Callback ID lost while using the webview

This is a licensee UDN: [Link Removed] I've reviewed the javascript/native bridge code and I don't see anything obvious.  The fact that it can happen on both mobile platforms might point at some hi ...