Unreal Engine Issues
Unreal Engine Issues
Niagara - When Interpolated Spawning is disabled, the first frame of each particle unexpectedly does not take into account the Particle Update stage
UE - Niagara - Feb 28, 2025Foreword: Even if the behavior described here is by design, it is rarely (if ever) expected or desired. This was discussed and agreed to be treated as a bug. Explanation below. When interpolated sp ...
Hidden enumerator variables can cause the enumerator to become broken with the Select node in blueprints
UE - Gameplay - Blueprint - May 26, 2015If a user makes an enumerator in C++ and sets one of the variables to Hidden and doesn't make it the last variable of the enum, it will cause issues with the numbering of the enum when using the Sel ...
Internal Compiler error when calling a custom enum in a struct from a blueprint macro
UE - Gameplay - Blueprint - Aug 6, 2015If a macro is referencing a custom enum within a struct and compiled after another output pin is removed, an internal compiler error will appear and the blueprint will not compile. ...
Max Pitch Angle does not correctly apply when utilized in procedural foliage volumes
UE - World Creation - Worldbuilding Tools - Foliage - Aug 27, 2015Random Pitch Angle does not properly apply when called within a procedural foliage volume. ...
Renaming a Struct variable that is used in a Widget BP creates 'Warning: Unknown property in' warnings in the Output Log
UE - Gameplay - Blueprint - Apr 27, 2016Renaming a Struct variable that is used in a Widget BP creates 'Warning: Unknown property in' warnings in the Output Log User Description: I think this should be brought up as these seems to be a ...
Sub-components with the same name are not displayed on the correct parents in the Blueprints editor
UE - Gameplay - Oct 12, 2018Sub-components with the same name are not displayed on the correct parents in the Blueprints editor. Upon creation of an Actor blueprint initially derived from a c++ base class (VRCharacter) which ...
WorldPartitionConvertCommandlet hits an assert when converting a persistent level that contains a sub-level with a landscape
UE - World Creation - Worldbuilding Tools - Nov 7, 2025Context: The Window tab allows a user to open the Levels window in order to add a sub-level to a persistent level. For Unreal Engine 5.0 and beyond, World Partition has made the Levels window obsole ...
Packaged Project with Media Player Asset 'From Memory' Crashes and Corrupts Project
Tools - Feb 9, 2015There is no Callstack associated with this crash. And I was unable to reproduce this in main due to a known issue when switching the 'Stream Mode' to 'From Memory'. When packaging a project in 4.6. ...
Static mesh component reports relative transform as world transform when Physics is enabled
UE - Gameplay - May 3, 2016If a static mesh component has Simulate Physics enabled, GetRelativeTransform() returns the value of world transform. ...
Property "GameFeatureData.PrimaryAssetTypesToScan.Directories" should be tagged with "ForceShowPluginContent"
UE - Foundation - Oct 11, 2025When using a Game Feature Plugin, one of the settings available in the "GameFeatureData" DataAsset (class UGameFeatureData) is "PrimaryAssetTypesToScan", which is an array of FPrimaryAssetTypeInfo s ...