Unreal Engine Issues
Unreal Engine Issues
Iris - Server fails to send client initialization RPCs after seamless travel if the client finishes travelling first
UE - Networking - Iris - Nov 18, 2025During seamless travel, when a client loads into the destination level it will call APlayerController::ServerNotifyLoadedWorld, including when it finishes the travel before the server. When the serv ...
Character blueprint tick function does not behave properly
UE - Gameplay - Jul 2, 2015Character tick event will continue to trigger even if Start with Tick Enable is set to false. Workaround: Setting "Set Actor Tick Enable" to false on Begin Play will prevent the tick event from t ...
Crashreporter.exe does not appear in packaged projects
UE - Foundation - Core - Oct 30, 2015Crash Reporter does not get packaged with development build projects when they have "Include Crash Reporter" set to true in packaging options. ...
Matinee tracks do not override Sound Notifies from AnimToPlay when using "Initial Position"
Tools - Oct 22, 2015In the attached project, there is an animation (with a sound notify) plugged into the AnimToPlay slot. The Initial Position is set to 0.5. The matinee in the scene overrides the animations applied ...
UDP Messaging causes extra network traffic on some network setups
UE - Networking - Oct 7, 2015A few users are experiencing strange network traffic from UDP Messagine. They notice it on other devices connected to the network. In some setups, it can even cause you to have cable TV interrupti ...
Sound Cues with Attenuation 'Override' Nodes break when Upgrading project to 4.11
UE - Audio - Apr 5, 2016When upgrading a project to 4.11, Sound Cues placed in the level with the 'Attenuation' override node no longer playback as expected. This issue was a bit weird when testing because the user report ...
Vertex Painting on Blueprint Static Mesh components lost on copy
UE - Gameplay - Components - Sep 1, 2015After vertex painting on a Static Mesh component of a Blueprint, the Vertex paint data is lost when the Blueprint is copied. Oddly, pasting into a text editor shows VertexColorData, but it seems to ...
Lighting build isn't saved when using -run=resavepackages and -buildlighting
UE - Foundation - Core - Jul 29, 2016Lighting build isn't saved when using -run=resavepackages and -buildlighting ...
Motion Blur creates dark artifacts on bottom of screen in editor
UE - Graphics Features - Aug 15, 2016When motion blur is active and the view port is in motion there will be a dark artifact visible at the bottom of the screen. Normally this isn't very noticeable however the effect worsens with speed ...
Animation Preview not playing under certain conditions
OLD - Anim - Aug 13, 2015Pausing the animation preview while in the Graph Tab of an Animation Blueprint will result in all animation previews being paused when you navigate to the Animation Tab. ...