Unreal Engine Issues
Unreal Engine Issues
TargetArray nodes are reported as invalid if played in Standalone mode but not in PIE
UE - Gameplay - Blueprint - Feb 20, 2015TargetArray nodes are reported as invalid if played in Standalone mode and the blueprints they are contained in are not rendered. Playing in PIE however works correctly and all blueprints are rende ...
Scene Capture 2D Actor causes Flickering on Windows 10 when Launched in Standalone
UE - Graphics Features - May 2, 2016Screen/Playable window flickers when playing in Standalone on Windows 10. A few users are reporting this issue which is exclusive to Windows 10 and Standalone mode. There is another issue the could ...
4.14 Launcher version ships with UE4-VulkanRHI*.a but requires Github source
UE - Platform - Mobile - Nov 7, 2016Launcher build ships with VulkanRHI Android binaries but do not seem to support Vulkan on Android from the launcher build without source. ...
Color and Opacity animation option does not play for Button component
UE - Editor - UI Systems - Aug 25, 2017Color and Opacity animation option does not play for Button component, this occurs both in the Widget editor and during play. This issue is not a regression Versions Tested: 4.16.3 - CL: 3561208 - ...
Params in material instance disappear when grouping is changed in material with a material layer
UE - Rendering Architecture - Materials - Jan 11, 2025If there is a texture parameter within a specific material attribute stream in the base material and also within the base material layer, they must have the same parameter group otherwise the parame ...
In UE 5.5, "Open Level By Name" is not able to find the map if the map is not added to "List of maps to include in a packaged build"
UE - Framework - Feb 13, 2025The "Open Level By Name" is not able to find the map to travel when the map is not included in the "List of maps to include in a packaged build" option. This issue was not happening in UE 5.3 and UE ...
Merge Actor tool can no longer merge just materials for an actor
UE - Gameplay - Jul 5, 2016In 4.11 when you selected an actor with multiple material elements with the merge actors tool open you had the option to merge the material elements into a single one. This option is no longer valid ...
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 ...