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 ...

USD Material variant selection is not reflected on mesh

UE - Editor - Content Pipeline - Datasmith - Importer - Jul 22, 2021

The material is expected to change from red to green. ...

Disabling the oculus rift plugin but no the Oculus input or Oculus Library will cause a crash

UE - Platform - XR - Oct 29, 2015

If the user disables the oculus rift plugin without disabling the oculus input and oculus library plugins the project will crash on opening. ...

Change FMacPlatformProcess::ExecProcess to read from pipe while the process is running

UE - Platform - Apple - Nov 27, 2015

We think that the reason users are having problems with svn on mac is that the platform implementation of ExecProcess waits until the process has shut down before any data is read off the pipe. This ...

If PIE is paused using the 'Pause key', the Pause or Resume buttons on the toolbar will no longer start PIE

Tools - Feb 5, 2015

If PIE is paused using the 'Pause key', the Pause or Resume buttons on the toolbar will no longer start PIE. You have to make sure that the icon is toggled to Pause, select the viewport, and then p ...

If a delay node is directly connected to Event Receive Draw HUD, Draw Texture will no longer render

UE - Gameplay - Jan 12, 2016

If the user connects Event Receive Draw up to a delay node and then connects the delay node to a draw texture node, the draw texture node will no longer render. ...

Using Subversion results in a hanging attempt to sync to source control

Using Subversion on a Mac to connect to an online repository causes the Source Control settings window to hang indefinitely and never succeed in connecting ...

A Blueprint containing a child actor component containing another Blueprint that derives from NavLinkProxy does not provide a nav path when a project is opened until paths are rebuilt

UE - AI - Jun 1, 2015

If a Blueprint is derived from NavLinkProxy, and then that Blueprint is added to another Blueprint as a ChildActorComponent, the second Blueprint's Smart Link functionality will not work when the pr ...

World Delta seconds appears to Cause a miss calculation (regression 4.12.3 -> 4.12.4)

UE - Gameplay - Jul 1, 2016

If the user uses world delta seconds in a calculation there appears to be some incorrect values. Note there is also a users project attached if you would like to look at that example. ...

Material loses Material Function reference when both are moved simultaneously

UE - Rendering - Architecture - Materials - Oct 6, 2017

Moving a material function asset along with a material using the function causes the material to lose the function reference when the project is restarted. Regression: Yeswith Material and sub fold ...