Unreal Engine Issues

Niagara Editor Viewport will crash when rendering opaque materials with Mobile Multi-View and Mobile Vulkan Preview Enabled

The Niagara viewport will crash when rendering opaque sprites if Mobile Multi View and the mobile preview are enabled. Additive materials do no crash, and if the viewport is not set to lit it does ...

Nativized build will crash on launch if a nativized Actor-based Blueprint class includes an instanced subobject that references another instanced subobject but does not also own it.

Crash occurs because the generated ctor for the nativized Actor-based Blueprint class is incorrectly trying to recreate a default subobject it owns through another instanced subobject. ...

UserWidget Struct members cannot be cleared when set from a parent widget

Struct members belonging to a UserWidget can be set from a parent widget, but they cannot be cleared. Upon compiling, the member will be set back to it's previous value. ...

Turning off Apply Wind after switching tabs crashes editor

In the Skeletal Mesh editor, turning Show>Clothing>Apply Wind while switching tabs causes a crash. For example, turn it on while in the Mesh tab. Switch to Animation Tab and then back to Mesh. Turn ...

Cannot set array elements from an array that is contained within a struct

Cannot set array elements from an array that is contained within a struct User Description: Setup: Array of structures "StructureA". In StructureA, array of integers/strings/whatever. Result: Can' ...

Playing a Haptic Soundwave will crash the editor

Paper2D Sprite Vertex Normals changed from 4.23 to 4.24

Comparing static mesh cube, plane, and a paper2d sprite with a lit material it appears that we've changed how we calculate the vertex normals for paper 2d sprites, see below: [Image Removed] ...

Investigate/Fix incremental component unregister

Streaming a level back in before it finishes streaming out behaves undesirably. When a level is streamed out the actors/components in the level are incrementally unregistered over multiple frames. ...

FPS drop after highresshot console command

Running the highresshot command with a multiplier of 6 or higher results in poor performance for the remainder of the Editor instance. Closing the PIE window does not improve performance, only closi ...

Niagara particles with collision will continue to move along World +Y-axis

Niagara particles with collision slide in the direction of World +Y-axis after the point they should have stopped. If the user uses multiple systems in the same spot all the emitters appear to bounc ...