Unreal Engine Issues
Unreal Engine Issues
Horde server fails to build Docker image
UE - UCS - Horde - Apr 1, 2025If you attempt to build the Horde server Docker image right now it fails unless you have some of the layers cached or a nuget proxy/cache that has cached some packages. JetBrains have renamed their ...
Moving a water body causes engine to drop fps and spike ms
UE - Graphics Tools - Terrain - Water - Apr 26, 2022Moving a water body lowers performance on the engine. The fps drop from 120 to 30 and ms spike from 8 to 30. This issue occurs in 5.0 Binary and 4.27 Binary on Windows. On Mac, FPS drop and ms spike ...
Upgrading Project to a New Engine Version Causes Errors When Attempting to Open Tutorial Blueprints
UE - Gameplay - Nov 11, 2015When you create a project in version 4.8.3, and update it to either 4.10 or Main, there seem to be issues loading the Engine Content Tutorials for FeaturePacks, InstallingiTunesTutorial, and Setting ...
Crash on play if a BP uses a ClearInstances node followed by an AddInstance node
UE - Graphics Features - Jul 21, 2017Crash on play if a BP manipulates a InstancedStaticMeshComponent by using a ClearInstances node followed by an AddInstance node. This is a blocker for the licensee. This is a regression: Working ...
Crash in FUniformExpressionSet::FillUniformBuffer trying access deleted UTextureCollection
UE - Rendering - Architecture - May 30, 2025Crash in FUniformExpressionSet::FillUniformBuffer trying access deleted UTextureCollection (Experimental in 5.6). The licensee describes their crash, their analysis, and a proposed fix: This crash ...
Xcode build will fail if project has a file that was added by the Editor that contains a Copyright (©) symbol
UE - Platform - Apple - Mar 27, 2017Code class files created by the Editor that include the Copyright symbol (©) are created with UTF-16 encoding. This encoding is not supported by Xcode on Mac, and will result in a build failure. In ...
Initializing custom Component on Actor in constructor causes odd hierarchy and details panel issues
UE - Gameplay - Blueprint - Feb 19, 2019When testing with a simple setup, as follows: MySceneComponent has a UProperty(VisibleAnywhere, BlueprintReadOnly) of a USphereComponent pointer, initiated in the Constructor AMyActor has a UProper ...
Focus mode in the Editor does not handle Actors without PrimitiveComponent correctly, treating them as if they were at the origin (0,0,0), skewing the camera placement.
UE - World Creation - Worldbuilding Tools - Nov 18, 2024Focus mode in the Editor does not handle Actors without PrimitiveComponent correctly, treating them as if they were at the origin (0,0,0), skewing the camera placement. Some Actors like the WorldDat ...
editor crashes when variable inside of a struct is set to a class type then the object is moved to a new folder
UE - Gameplay - Blueprint - Mar 17, 2015If a struct has a variable set to a class type, then the object of that class type is moved to a new folder in the editor, the struct will replace the class type with "class", which causes the edito ...
UMG widget callbacks do not set PIE context in editor
UE - Editor - UI Systems - May 21, 2018This is from a UDN post. Several gameplay functions, such as level streaming and SoftObjectPtr resolution, depend on the GPlayInEditorID being set when that code is executed in PIE in the editor. T ...