Unreal Engine Issues

UE4.27.2 Dangling reference and assertion failure in FMaterialShader::GetShaderBindings() in ShaderBaseClasses.cpp

This seems to be a threading issue, as forcing the editor to run single threaded with -onethread makes the assert not reproduce. ...

Added Scene Components are Missing Billboard Nodes

Newly added scene components to blueprints will have no billboard sprites, and thus cause the actor to be invisible in the editor unless other visible components are added. They exist on the default ...

[Sequencer] Setting additive transform keyframes on Actor Blueprints (using S hotkey) causes Actor to pop

See attached gif for popping behavior. The issue does not occur if using the Enter hotkey or clicking the Add Keyframe button. The issue also does not occur on static or skeletal meshes.  ...

PIE window resizes on launch when using Windows scaling

The user suggested scaling the TitleBarSize in SWindow::GetClientRectInScreen by GetDPIScaleFactor(), which makes sense to me but doesn't seem to solve the issue entirely. ...

Iris - check hit in FNetBitStreamWriter::InitBytes if object has only COND_InitialOnly replicated properties

InitOnly FReplicationStateDescriptors will have a value of 0 for ChangeMaskBitCount, so if an object only has COND_InitialOnly properties, its FReplicationProtocol will also have a ChangeMaskBitCoun ...

Level and Blueprint viewports have different behavior when calling FComponentVisualizerManager::HandleClick

User reports a difference in how component visualizer clicks are handled in editor vs blueprint viewports. This is likely not intentional, just a case of a difference in control flow in each viewpor ...

Unloading a level instance by data layer creates empty folders in the top level of the outliner

Reset to default behavior for arrays is inconsistent about updating customized struct headers

The behavior for resetting the default for customized struct properties is inconsistent and needs to be reviewed and fixed. Currently we see this behavior:In non-array properties, the header will be ...

Keep Simulation Changes Applies to Incorrect Actor with Sublevels

When setting properties and saving simulation changes, EditorUtilities::GetEditorWorldCounterpartActor and EditorUtilities:GetSimWorldCounterpartActor functions seem to get the wrong actor. Actors i ...

Inconsistent media texture new style output state across the engine

A simple search for `NewStyleOutput = true` will reveal the many instances where this flag is already forced on, including media plates and media bundles. This however means that we have incompatib ...