Unreal Engine Issues

Particle System Components don't inherit owner's time dilation

This is a regression introduced by the particle system manager. It does not account for the owning actor's time dilation when ticking the particle system components.  ...

Flickering shadows/GI when DrawMaterialToRenderTarget is called per tick in PIE

When DrawMaterialToRenderTarget function is called on tick and actors are spawned in game, the lumen shadow/GI visually flickers. Debugging shows that the lumen screen probes are flickering as well. ...

UGS bug when Reading Column Weights from Config Files

Blueprints can enter a corrupted state where Actors construct DefaultSubobjects using CreateOptionalDefaultSubobject, even though child classes call DoNotCreateDefaultSubobject

Blueprints can enter a corrupted state where Actors construct DefaultSubobjects using CreateOptionalDefaultSubobject, even though child classes call DoNotCreateDefaultSubobject. In some situations, ...

Blueprints components setup through code cannot have the parent socket set inside the blueprint

If a component is created/setup through code and set as the child of a mesh component, clicking the magnifying glass in the Parent Socket field does not bring up the list of mesh sockets to attach t ...

Timelines are displayed as [Unamed TimelineComponent] in the Details view

Timelines are displayed as [Unamed TimelineComponent] in the Details view. Renaming the Timeline in the Blueprint has no effect. Reproduced in 4.7.3 binary and Main (//depot/UE4/Promotable-CL-24874 ...

Vectors added to blueprint components don't display 3D widgets when the applicable options are set.

Component blueprints behave differently to normal actor based blueprints with regards to the show 3D widget option when a vector in the blueprint is set to editable. Basically the 3d widget never s ...

Particles cannot be rotated in Local Space and behave erratically without local space

Particles using the Velocity Over Life Module with extremely high values are behaving erratically without Local Space turned on and with Local Space turned on you can not rotate the particle system ...

static meshes snap through static meshes created from bsp meshes to next lower mesh on the Z axis

Static meshes do not snap to meshes created from bsp brushes, despite being turned into static meshes themselves. They instead snap to the next lowest mesh on the z axis. ...

State Machines are re-initialized from entry after playing a Montage

State Machines are re-initialized from entry after playing a Montage This is a Regression: Does not occur in 4.11 ...