Unreal Engine Issues

Crash when resizing window using Quad Stereo Buffer

We noticed crashes in our application when we attempted to resize a window or switch to full-screen mode. Hence, resizing windows and switching to full screen will result in a crash on Unreal Engine ...

Moving a section with multiple same name tracks in sequencer causes unexpected track swapping

SceneTexture [SceneDepth] is not displayed correctly in ES3.1Preview

It will be displayed correctly when launched with XperiaXPerformance. ...

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 ...

Mesh Paint can fail to find vertices using physics collision query

Mesh paint is for painting the vertices of a mesh, but in part uses physics collision queries to detect hits and search for vertices. (see FMeshPaintGeometryAdapterForSkeletalMeshes::LineTraceCompon ...

Edited properties of replicated components created via the "AddComponent" BP node aren't correct on clients

When properties are customized on an Add Component node, and the component is replicated, the client will create the component without the customized properties. This is likely due to subobject repl ...

UCharacterMovementComponent OldVelocity is pre-additive while Velocity is post-additive

In UCharacterMovementComponent code such as PhysFalling, RestorePreAdditiveRootMotionVelocity is called before FVector OldVelocity = Velocity; leaving OldVelocity in a pre-additive state making furt ...

Event Blueprint Initialize Animation executes multiple times per instance per frame

When editing the default values of a BP using an ABP, the ABP's initialize event will be triggered multiple times in a single frame.  ...

TMap entries are removed on Blueprint compile when using struct as key

Map entries are removed on Blueprint compile when using struct as key.  ...

Background Blur widget renders with offset in PIE when within a Retainer Box

The background blur widget does not render in the correct position in PIE when it is within a retainer box. It's likely that we're not applying the retainer window's offset properly when calling FSl ...