UE4 Crashes if multiple Vive Trackers or Lighthouses are used

UE - Platform - XR - Jan 24, 2018

User reports that if more than 5 trackers are connected, UE4 crashes Suggested fix: Root cause of bug is related to the fact that UE has no setup to receive input events from Vive Trackers. (we ha ...

Modifying the properties of a ChildActorComponent in a child blueprint can modify the parent actor ChildActorComponent properties.

UE - Framework - Blueprint - Dec 10, 2024

When a property of a ChildActorComponent is modified in a child class, the parent ChildActorComponent class can also get modified. This happens when the Parent blueprint actor has a ChildActorCompo ...

Graphical Artifacts in Editor with Macs using Certain AMD Graphics Cards

UE - Graphics Features - Sep 17, 2015

Users are reporting black and splotchy like graphical issues in their projects when working on a Mac and using an AMD graphics card. The user in the link provided mentions, "that UE 4.8.3 is withou ...

Resave commandlet broken when using BuildEnvironment = TargetBuildEnvironment.Unique;

UE - CoreTech - May 14, 2024

The explanation from the licensee seems pretty comprehensive. Text from the UDN: We've been trying to run fixupredirects via the resavepackages commandlet, but noticed that the OFPA assets were no ...

Crash with FBX with LODs when distance fields and Generated Lightmaps are enabled

UE - Graphics Features - Jan 12, 2015

DESCRIPTION: When importing a mesh with 1 or more additional LODs when Generate Mesh Distance Fields has been enabled via the Project settings will cause a crash if the import options include using ...

Rearranging the position of enumerators in an Enum BP will change references to the enumerators inside Data Tables based on position rather than value

Tools - Nov 12, 2015

Rearranging the position of enumerators in an Enum BP will change references to the enumerators inside Data Tables based on position rather than value. Reproduced in 4.8.3 binary, 4.9.2 binary, 4.1 ...

adjusting the scale of a DM via BPs will not give accurate collision

UE - Simulation - Physics - Destruction - Dec 8, 2014

DESCRIPTION: Adjusting a DMs scale via blueprints will cause issues for the collision of the DM once it has been scaled up or down. Scaling down by half or up by a value of 2 or 3 is easier to see t ...

Sound Track in Matinee Ignoring Track Location and Playing Audio at Beginning of Sound Wave/Cue

Tools - Sep 22, 2015

When scrubbing the Matinee handle with a Sound Track added, no matter the location of the handle, the sound wave associated will play from the beginning of the audio file. Tested in 4.8.3 - 2634408 ...

Using GeoMerge on fragments of a GeometryCollection (GC) will create a new single particle while removing the old particles, but although you end up with less particles, the disk file size of the GC uasset increases.

UE - Simulation - Physics - Destruction - Nov 26, 2024

Using GeoMerge on fragments of a GeometryCollection (GC) will create a new single particle while removing the old particles, but although you end up with less particles, the disk file size of the GC ...

ShowOnlyInnerProperties does not work on a struct property in a class nested within another class as an instance

UE - Gameplay - Blueprint - Feb 19, 2019

When the ShowOnlyInnerProperties property specifier is used for a struct property, the properties contained within the struct are exposed to the Blueprints Details panel as if they were part of the ...