Unreal Engine Issues

Distant mesh / vista have visible Lumen bounces

Objects far outside of the Lumen Scene don't temporally accumulate screen traces, leading to heavy flickering. It appears that the temporal reprojection is failing when comparing the depth in "Scree ...

[CrashReport] FGraphActionNode::~FGraphActionNode()

This is a trending crash coming out of the 4.18 Previews. User Descriptionstrying to use media framework in mpseemingly random crashes, mostly when interacting with blueprint editorctrl drag float ...

[CrashReport] UE4Editor_ContentBrowser!SAssetView::AssetRenameBegin() [sassetview.cpp:3956]

This is a common crash that has occurred since at least 4.17. Users have not provided any descriptions about their actions when the crash occurred. Source Context 3952 void SAssetView::Ass ...

Sub Anim Instances don't properly account for Blend Weight when firing notifies.

If you add a cluster to another level to create HLOD and open a hierarchical outliner at the original level, the original level crashes.

Please check the attached file. https://udn.unrealengine.com/questions/417308/hlod-%E3%82%92%E4%BD%9C%E6%88%90%E3%81%99%E3%82%8B%E3%81%9F%E3%82%81%E3%81%AE%E5%88%A5%E3%83%AC%E3%83%98%E3%83%AB%E3% ...

Crash occurs while replacing a Widget Component with a user created Text Block

This is not a regression. Tested in //UE4/Release-4.27 CL18319896. The crash occurred. Crash occurs while replacing a Widget Component with a user created Text Block blueprint. ...

"Create Layers From Assigned Materials" assigns existing LayerInfos at random

The automatic landscape layer assignment that is performed when using "Create Layers From Assigned Materials" just uses the first layer info it finds with the layer's name, which leads to maps refer ...

Subobject delimiter replacement in ResolveName can cause previously valid strings to exceed NAME_SIZE

ResolveName will replace the subobject delimiter (colon) with two periods. This increases the length of the string, and can cause asserts due to the string exceeding NAME_SIZE even when the name was ...

Ensure undoing pin split - Found K2Node_CallFunction_429 ('K2Node_CallFunction') that does not belong to EventGraph.

REGRESSION: Yes, does not occur in 4.17.2 Ensure occurs when undoing the splitting of a pin. ...

Crash when placing a native UserWidget in a panel within another UserWidget

The engine crashes when trying to initialize a native UserWidget within another widget. This happens because UUserWidget::GetSlotNames gets called before the widget tree is initialized, and we don't ...