Editor crash when building lighting and world partition minimap

UE - World Creation - Worldbuilding Tools - World Partition - Apr 17, 2025

It is possible for an editor crash to occur if a build is running (Lightmass in this case) and another is launched such as Build World Partition Minimap (as well as HLOD and Spline builders). This i ...

ChordBlockers don't work as expected when ChordAction is set in InputAction

UE - Gameplay - Input - Jun 3, 2025

In the Enhanced Input System, when using a UInputTriggerChordAction to define a chorded input (e.g., Shift + W), the automatic chord blocking system (UInputTriggerChordBlocker) only functions correc ...

Adding a scene component to a child blueprint causes log warnings to appear in output log

UE - Gameplay - Blueprint - Sep 1, 2015

If a scene component is added to a child blueprint and the parent blueprint is compiled, a log warning will appear that states: "LogBlueprint:Warning: USimpleConstructionScript::FixupRootNodeParen ...

Attaching New Camera Actor to Spring Arm Component does not set the Location Correctly

UE - Gameplay - Blueprint - Apr 2, 2015

After adding a new Camera Actor Component within Blueprints to an existing Spring Arm Component, the Camera Component adopts the location settings , but does not set its location within the viewport ...

Input from a second gamepad is not detected until the game window is clicked with the mouse

UE - Gameplay - Input - Dec 12, 2014

In a packaged local multiplayer game, input from a second gamepad is not detected until the game window is clicked with the mouse. The first gamepad input is detected as expected. ...

The World Outliner doesn't refresh after Seamless Travel

Tools - Apr 27, 2015

The World Outliner doesn't refresh after Seamless Travel. Enabling any of the View Options will refresh the list to properly show the actors in the current level. Reproduced in 4.7.6 binary and Mai ...

RecreateLandscapeCollision console command regenerates collision over landscape holes

UE - LD & Modeling - Terrain - Landscape - Feb 13, 2015

Using console command 'RecreateLandscapeCollision' resets collision in areas that landscape hole materials have been placed. Workaround: paint new hole material to re-remove collision from areas w ...

Crash Occurs When Attempting to Pass a Struct Containing an int64 into a Blueprint Function

UE - Gameplay - Blueprint - Feb 17, 2016

Attempting to pass a struct containing a variable of a type that is not compatible with blueprints into a blueprint function causes the editor to crash upon PIE. Found in 4.10.2 binary. Reproduced ...

HISMC always shows lowest LOD

UE - World Creation - Worldbuilding Tools - Foliage - Nov 22, 2016

User report: HISMCs are currently broken in master. They always show the lowest LOD available for a mesh, so if you have a HISMC with a tree mesh set, you would always see the billboard of the tree ...

Shift+Tab does not bring up Steam overlay when Steam VR is running

UE - Online - Mar 14, 2017

Shift+Tab does not bring up Steam overlay when Steam VR is running ...