Unreal Engine Issues

Changing Texture Parameter via SetMateriaInstanceTextureValue remain old texture's reference

When editing the texture parameter of Material Isntacne using Editor Utility Widget, the old texture is linked with the SoftReference. When change the texture parameter in Material Instance Editor, ...

Clothing Simulation popping

Parameters Pane shows different Variable Name then MapGet or MapSet

Variable names aren't displayed in MAPGET and MAPSET the same way as they are in the Parameters Pane. This is a regression from 4.24.3 (CL-11590370). This issue was reported and tested in 4.25 Prev ...

Crash/ensure when linking anim layers from animation update

Originally reported here: https://udn.unrealengine.com/questions/562047/linked-layer-animation-blueprint-proxy-missing-ske.html When linking an anim layer during update, we get either an ensure or ...

Performance Regression in Forward Rendering with most settings off.

When rendering with forward rendering, the ComposeSeparateTranslucency call is called even when separate translucency is not enabled. Additionally, Downsample.HalfResolutionSceenColor gets called ev ...

Material slot names are lost when merging SkeletalMeshes

When we use the FSkeletalMeshMerge utility, material slot names are lost on the resulting mesh. We should at least transfer the first slot name found for a given material. ...

Niagara Remove Pin Feature now deletes the variable completely from the Parameters Pane

This is a regression from 4.24.3 (CL-11590370). Removing a pin on a Niagara Module Script parameter will removed the variable as well. This was reported and tested in 4.25 Preview 2 (CL-12055273) ...

Landscape Tool crashes on Layer Import

The heightmap and weightmaps were created using Terresculptor, and exported in the correct format. If you import everything except the layermaps, the landscape is generated and the layers can be pai ...

SceneCaptureComponent2D leaks a ton of memory in a Packaged Build

This was initially reported in VR but the leak happens in a non-VR setup and environment. GPU utilization jumps to 84% in 4.23.1 and 98%+ in 4.24.3, 4.25, and 4.26. Tested GPUs were GTX 980 and GTX ...

Color picker does not change the color of a Vector Parameter in a Material Instance until the mouse button is released

This is a regression from 4.23.1 (CL-9631420). The color picker does not update in realtime anymore when holding down the left-mouse button. Only on mouse-release does it update. This was reported ...