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 ...

When playing matinee, scrubbing can cause sound to keep playing when it isn't triggered

UE - Audio - May 31, 2016

When playing matinee, scrubbing can cause sound to keep playing when it isn't triggered Note: This was entered as a bug to re-work the fix from the pull request found here: [Link Removed] ...

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 ...

Copy and paste State in the state machine do not correctly refresh synced objects when it have transition rule(fraction)

OLD - Anim - Apr 12, 2017

Copy and Paste action in State machine do not generate correct info for "AnimGraphNode_SequencePlayer_20" Name for "AnimGraphNode_SequencePlayer_#" in the duplicated state is not changed to corresp ...

[CrashReport] UE4Editor_SlateCore!FSlateElementBatcher::AddElements() [elementbatcher.cpp:52]

UE - Editor - UI Systems - Slate - Nov 21, 2017

This is an infrequent crash coming out of the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Based on affected project names, this may be a VR is ...

DrawDebugString display wrong position in PIE when changed display scale

Tools - Sep 16, 2020

The display position of the text in DrawDebugString is affected by the scale of the display. Should refer to the Project() of DebugCanvas (not Canvas). -  Suggest Code void AHUD::DrawDebugTextL ...

No sound plays when using Built-In Spatialization or Simple ITD plugins

UE - Audio - Spatialization - Nov 10, 2021

No audio can be heard when using the Built-In Spatialization plugin. This is a regression from 4.26. Occurs in 4.27 and 5.0. ...

TInstancedStruct used in native actor class loses reference to Instanced UObject after BP recompilation

UE - Framework - Blueprint Compiler - Jun 25, 2025

When a TInstancedStruct contains a UObject marked with EditInlineNew and DefaultToInstanced, the reference is lost after compiling the Blueprint but only when the struct is part of a native Actor cl ...

Editor crashes when assigning Landscape layer info while Forward Shading is enabled

UE - LD & Modeling - Terrain - Landscape - Nov 7, 2017

Crash occurs when Forward Shading is enabled in Forward Rendering Options User noted that if "Support Stationary Skylight" in Project Settings > Rendering > Shader Permutation Reduction is disabled ...