Unreal Engine Issues

Incremental GC vs Loading Screens deadlock

A licensee is reporting that using a loading screen with the incremental garbage collector can result in a dead lock when a loading screen is displayed. The licensee found out that:  -------------- ...

Significant hitch occurs when invoking ApplySettings on a UGameUserSettings object

Calling the ApplySettings method on a UGameUserSettings object results in a noticeable hitch, with severity proportional to the number of primitive components present in the scene. This hitch stems ...

BP - Nativizing a UMG widget hierarchy in which a child widget of another widget BP type has the "Is Variable" box unchecked will result in a crash at runtime.

When the "Is Variable" box is unchecked for a BP-typed child widget, a variable will not be created at Blueprint compile time to reference the child widget in the nativized widget BP class. This bre ...

WatchEnumProperty() node failing to find Enum property in tool property set

Within a UEditorScriptableClickDragTool tool, when attempting to watch the changes of an UENUM property using WatchEnumProperty() node, the property will never be able to be found during FindValid ...

Creating a control rig via FControlRigBlueprintActions::CreateNewControlRigAsset crashes

FControlRigBlueprintActions::CreateNewControlRigAsset is crashing in ResolveObjectHandleNoRead.  Looking at the control rig in UControlRigBlueprint::Serialize, it's marked as pendingkill but I'm uns ...

Networked voice starts before local player is registered

The voice engine starts before it is ready. FOnlineVoiceImpl::StartNetworkedVoice is called prior to VoiceEngine->RegisterLocalTalker() in FOnlineVoiceImpl::RegisterLocalTalker(). This leads to the ...

MediaPlayer pauses when using voice input on IOS

Translucent material can't get reflection on mobile deferred.

Enabling ZenLoader causes editor crash when undoing Level Instance deletion

Crash reported through UDN. With ZenLoader enabled, deleting a level instance and triggering Undo causes a crash in  ULandscapeComponent::PostEditUndo() The user has provided an example project th ...

Setting Texture Group "UI" from Editor Utility Blueprint at Import causes a crash

In Blueprint, binding a custom event to OnAssetPostImport and setting TextureGroup to UI causes the UE editor to crash. But if it sets to the other group like "World" or "Character", this crash does ...