Unreal Engine Issues
Unreal Engine Issues
Block noise on particles/skeletal meshes when launched onto certain Android devices
UE - Platform - Mobile - Oct 12, 2016When launching particles and skeletal meshes on certain devices, they create block noise pixels instead of a smooth flame for example. Regression: Yes Did not occur: Binary 4.12.5-3039270+++UE4+Rel ...
Set Relative Location on components does not replicate to clients
UE - Networking - Sep 2, 2015Set Relative Location on components does not replicate to clients. Reproduced in 4.8.3 binary, 4.9.0 binary, and Main (CL 2676715) ...
UE4 Crashes if multiple Vive Trackers or Lighthouses are used
UE - Platform - XR - Jan 24, 2018User 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 ...
Child Actor Component reappears after Undoing Parent Deletion
UE - Gameplay - Blueprint - Feb 5, 2018After loading a map containing a ParentBP with a ChildActorBP, Deleting and undoing the deletion will "resurrect" the original child, and a new child actor is parented to parent. Possibly Related: ...
ResavePackages commandlet (buildlighting) fails/asserts on reflection captures in non-visible sub-levels
UE - Graphics Features - May 13, 2025When building reflection captures through the ResavePackages commandlet, it frequently triggers an ensure inside of ReflectionEnvironmentCapture.cpp. If distributed shader builds start causing prob ...
OSSNull doesn't properly filter servers based on settings
UE - Online - Oct 19, 2016OSSNull doesn't properly account for bShouldAdvertise or bAllowJoinInProgress. These should be updated in OnValidQueryPacketReceieved. (Note, bShouldAdvertise is explicitly ignored in LAN matches) ...
Asset selection menu tooltips can overlap the dropdown menu
Tools - May 23, 2016Asset selection menu tooltips can overlap the dropdown menu. It is using the Content Browser tooltips, which attempt to go down and to the right of the menu. However, if the menu is close enough t ...
Launching HTML5 from Project Launcher causes an error
UE - Platform - Mobile - Dec 13, 2016Projects launched from project launcher are receiving an expression error on Google Chrome and FireFox. ...
Actor leaves behind ghost collision when detached and simulating physics
UE - Simulation - Physics - Jan 18, 2017Actor leaves behind ghost collision when detached and simulating physics. The collision doesn't show when 'Show Collision' is enabled but from the physics simulation it is clear that a collision box ...
When changing the variable name of Parent Blueprint, only Child Blueprint existing on the opened level becomes Dirty.
UE - Gameplay - Blueprint - Oct 20, 2017Changing the variable name of the parent Blueprint also effects the changes to the child Blueprint, but the Dirty result changes depending on whether it is placed on the level. This means that Child ...