Unreal Engine Issues
Unreal Engine Issues
Blueprint compiler doesn't always initialize struct consts correctly
UE - Framework - Blueprint Compiler - May 1, 2025Blueprints currently don't support unsigned 64 bit ints, but they do support signed 64 bits. If a Blueprint uses a native struct variable that contains a uint64 property, it incorrectly assigns that ...
Static meshes viewed in the static mesh editor in orthographic side view are becoming white after a couple of seconds when quality preset is maximum.
UE - Graphics Features - Jun 18, 2025Context: Orthographic views are used to have a 2D view of a 3D object providing precise control over object placement and alignment. This can be used for projects like isometric games and architectu ...
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 ...