Unreal Engine Issues

Implied Decal Blend Modes don't account for static ignore-switch parameters in an expected way

The desired behavior from a user perspective here is that they'd be able to use Static Switches in a decal master material to toggle different features and behaviors. In the above setup, if I set th ...

Implied Decal Blend Modes don't properly account for Material Attributes usage

I've attached a project with the necessary materials that demonstrate this issue. I would expect that just because a Set Material Attributes node is inside a material graph it wouldn't affect the de ...

Vertex Interpolators broken in landscape materials

D:/Unreal/UE4_Release-4.27/Engine/Shaders/Private/LandscapeVertexFactory.ush(788,3-59): Shader FDebugViewModeVS, Permutation 0, VF FLandscapeVertexFactory[Image Removed]:/Unreal/UE4_Release-4.27/Eng ...

DefaultEditor.ini dirtied when UpdateSingleSectionOfConfigFile is called for an object containing an array property

Closing an AdvancedPreviewScene results in a call to UAssetViewerSettings::Save to save the preview scene settings, regardless of whether or not anything has been modified. This in turn calls Update ...

Crash when adding a streaming level to the world through Python

When using the Python plugin to add an existing level as a streaming level, the editor crashes. It seems that this happens regardless of what level is added or what the contents of that level are. A ...

[Submix][Recording] - Existing Sound Wave to Overwrite option has no effect

This is an old bug that looks like it never made its way into JIRA. Adding for documentation.  ...

Buoyancy is broken in UE5: even BP with Cube SM component (mass is 1kg) and default Buoyancy Component with one default Pontoon falls on bottom of lake

Shorter steps:Steps 1-8 from Steps to reproduce (create level with water body)Find BP_BuoyancyExample in Content Browser (Engine>Plugins>Water Content>Blueprints)Place BP_BuoyancyExample above the w ...

Merge Actors are not culled by LandscapeStreamingProxy when using Landscape Culling

[Feature Request] CVars for HISMC

Currently some (if not all or most) foliage CVars affect both foliage and HISMC. It would be nice to split this so that users can change the values of one without affecting the other. ...

[Feature Request] Add option preventing double startup for desktop platforms

In release versions of desktop applications, various issues (such as double login) may require implementation to prevent double startup. In order to implement this feature, each developer need to mo ...