Unreal Engine Issues

Editor crashes when attempting to open a new level from a level that has an external curve in a timeline within the level blueprint

The editor crashes when a user imports a float curve into a timeline within the level blueprint then attempts to open another level. ...

UObjects returned from "Get Item Children" in a TreeView widget causes an engine crash, due to invalid pointers

UObjects returned from "Get Item Children" in a TreeView widget causes an engine crash, due to invalid pointers. User has proposed the following fix: The best fix is probably such: When Slate list ...

LIVE: Reflection Capture are not working with moveable directional light on mobile

When a Directional Light is changed from static to movable, the materials in the level will appear dark. ...

Engine crashes when trying to copy a setter node for a GameplayTag variable from one eventgraph to another eventgraph

When trying to copy a setter node for a GameplayTag variable from one eventgraph to another eventgraph the engine crashes. If the blueprint that is copied into has a GameplayTag variable with the sa ...

Data Asset Deserialization crash after upgrading 4.19.2 to 421.1

The User has provided an extensive log of their code base setup, and the process leading up to when the Assert occurs. "Our game mode & player state FSM are setup in a data driven manor using UDa ...

Packaging with plugins GearVR and GoogleVR together cause build failed with multiple definitions of GetHMD()

Packaging with plugins GearVR and GoogleVR together cause build failed with multiple definitions of GetHMD(). Log attached for build error and error portion plugged into the callstack box. ...

Crash when setting Retainerbox scale is set to 0 at runtime

Crash at runtime when Retainerbox scale is set to 0. The call stack indicates that the size of RenderTarget2D is set to 0. Attached repro project sets the scale of the RetainerBox that wraps the Im ...

[Rhino] Fail install of Datasmith Exporters on Rhino 8 on MacOS

Landscape incorrectly renders when camera clips through foliage while Playing in Editor

Landscape sections disappear for a very brief time when the player camera clips through foliage quickly. ...

Importing static mesh while a PIE session is running permanently breaks nanite on the asset

Importing a Static Mesh during PIE can cause it to never enable Nanite, even if it reports that Nanite is enabled. To re-enable Nanite on the mesh, the asset needs to be deleted and imported again ...