PostRepNotifies may not always be called

UE - Networking - May 8, 2018

FObjectReplicator::UpdateUnmappedObjects calls  CallRepNotifies, but does not call PostRepNotifies. Further, the order of CallRepNotifies and PostNetReceive in FObjectReplicator::UpdateUnmappedObje ...

Animation Track in Shot Does Not Animate With Evaluate Sub Sequences In Isolation Enabled

UE - Anim - Sequencer - May 15, 2018

When Evaluate Sub Sequences in Isolation is enabled in a shot, other shots inside the same sequences only play the transform track and do not play their animation track Does not affect 4.18.3 Relat ...

When creating a new widget that derives from an existing widget it will not show up in the palette hierarchy after restarting the editor

UE - Editor - UI Systems - May 15, 2018

When creating a widget based on a widget that is available by default in the editor it will not show up in the palette once the editor has been closed until the widget itself has been opened during ...

DebugCanvas handling Windows HighDPI scaling incorectly

UE - Editor - UI Systems - Slate - May 16, 2018

Change windows DPI scaling to something other than 100% causes the DebugCanvas to display incorrect position and text size. ...

GoogleVR rotational input stuttering after disabling stereo rendering

UE - Platform - Mobile - May 16, 2018

In a Google VR project, stuttering occurs when switching from stereo rendering to mono. Seems less like performance and more of a sensor input problem? 4.17 - No repro 4.18 - Unable to package (Ma ...

Instanced Static Mesh component instances in levels that are not currently loaded do not have their defaults updated properly

UE - World Creation - Worldbuilding Tools - Foliage - May 17, 2018

Editing the properties of an Instanced Static Mesh or Hierarchical Instanced Static Mesh does not propagate those edits to the defaults of instances that are in levels that are not currently loaded. ...

Enabling Preview Rendering Level Mobile GLES3.1 on Map With Vector Fields Results in Editor Crash

UE - Platform - Mobile - May 21, 2018

Reproduced Crash on 4.18.3, 4.19.2, and Main CL 4081612. Licensee states: Based on a quick inspection of the code, it seems FVectorFieldVisualizationVertexFactory::ShouldCache() returns false (req ...

Editor Crashing on Details Panel when Calling ForceRefresh

Tools - May 30, 2018

Editing bool of the nested child CrashableDataAsset causes crash. Expected: CrashableDataAsset children are properly assigned. Result: Engine crash ...

Unconverted BP function library does not assign output parameters after function call in a nativized build.

UE - Gameplay - Blueprint - May 31, 2018

Stub functions generated for unconverted assets as dependencies of nativized assets do not properly handle output parameters (the result is not assigned after the ProcessEvent() call). Suggested fi ...

Instanced Components variable not returning updated values in the construction script

UE - Gameplay - Blueprint - Jun 4, 2018

It is currently not possible to set variable values of an actor component, instanced in the level, by using the "details" pane. The Actor's construction script will only evaluate the variable defaul ...