Unreal Engine Issues
Unreal Engine Issues
Planar Reflections Cause Big Performance Hit In Packaged VR Projects
UE - Platform - XR - Jan 22, 2020Planar reflections notably lower performance in packaged VR project. Linked is an example project and an example package. [Link Removed]. This was tested on a Vive Pro and Oculus Rift(not Rift S). ...
OnTextChanged not called for UEditableTextBox / UMultiLineEditableTextBox when text is set programmatically
UE - AI Workflows - UI Systems - Sep 29, 2025When calling SetText() on a UEditableTextBox or UMultiLineEditableTextBox, the OnTextChanged delegate is not triggered. This regression was first reported in UE 5.3 and acknowledged previously in UD ...
After calling Seamless Travel, actors in the level will not be in their original positions
UE - Networking - Dec 18, 2015After calling Seamless Travel, actors in the level will not be in their original positions. The example provided by the licensee had a different result: the actors, despite having Start Awake disabl ...
Anisotropy not working correctly when used in Material Layers
UE - Rendering - Architecture - Materials - Jan 17, 20241. When a Material Layer is applied and there is no node connected to Anisotropy in the master material(M_Test_1), the material does not function correctly after packaging, although it works properl ...
Crashes when copying an array of actors that implement an interface into an array of interface references
UE - Gameplay - Sep 17, 2019When assigning an array of actors that implement a specific interface to an array of the specific interface the engine crashes. This doesn't happen if the actor array is put through a for each loop ...
Running a server from the editor will crash this project
UE - Networking - Mar 8, 2015Running a server from the editor will crash this project. Reproduced by using UE4Editor <projectname> -server -log to run the editor. This does not occur with a new project in 4.7.2 or in Main. ...
The default values of a Struct variable in a Blueprint will return to the default values of the Struct on compile when all values are set to 0
UE - Gameplay - Blueprint - Jan 19, 2015The default values of a Struct variable in a Blueprint will return to the default values of the Struct on compile when all values are set to 0. Possibly related to [Link Removed] Tested in 4.6.1 a ...
The light in the Blueprint Editor's Preview Scene does not respond to any lighting channel but 0.
UE - Framework - Blueprint Editor - Jun 28, 2024In the Blueprint Editor, Primitive Components can be configured to respond to Lighting Channels 0, 1, and/or 2. However, if channel 0 is disabled (even with another one enabled), the Preview Actor's ...
StreamableManager completion callback can happen after being canceled in same frame
UE - Core - Systems - Feb 16, 2024FStreamableHandle (used as part of the FStreamableManager system) has a CancelHandle function that stops it from calling any completion callbacks related to that handle (it could cancel the load req ...
Event Dispatcher name changes do not propagate to related nodes until the editor is restarted
UE - Gameplay - Blueprint - Mar 17, 2015Event Dispatcher name changes do not propagate to related nodes until the editor is restarted. This does not appear to affect functionality in 4.7.2. In Main, the nodes must be refreshed to restore ...