Hitting a breakpoint in widget blueprint while running PIE with Selected Viewport mode blocks entire editor rendering

UE - Editor - UI Systems - UMG - Oct 6, 2023

This problem does not occur when running PIE with New Editor Window mode. ...

Audio Does Not Play Back Correctly when entering an Audio Volume with a Submix Send that is PreAttenuation with a Submix using Convolution Reverb

UE - Audio - Oct 24, 2023

Entering an Audio Volume that has a Submix Send set to Pre Distance Attenuation and using a Convolution Reverb causes severe audio glitching. Does not occur if Send is Post Distance Attenuation. Doe ...

GameplayTagQuery in editor can fail to update to new values or reset after being cancelled

UE - Gameplay - Apr 25, 2024

When editing a GameplayTagQuery inside of the editor, there are times when the query editor will not update the query when selecting Ok or fail to return the query to its original state before editi ...

Input Actions bound to Any Key become unresponsive after mouse scroll until scrolled again

UE - Gameplay - Input - Mar 28, 2025

In UE latest release (5.5 launcher version), Enhanced Input Actions mapped to "Any Key" stop responding after scrolling the mouse wheel. Specifically, scrolling either up or down disables the Any Ke ...

An ensure is triggered when a StaticMesh is set inside a StaticMeshComponent on an actor, and another actor references the static mesh actor from two child actor components.

UE - Framework - Blueprint - Feb 5, 2025

There is an issue when setting a Static Mesh inside a blueprint that it is referenced by another blueprint with more than one child actor. An ensure is triggered inside the engine, and there is a ...

Editor crashes when creating a new level while the current level contains an Actor with an Actor Sequence Component

UE - Anim - Sequencer - Jan 5, 2022

This is not a regression. Tested in: //UE5/Main CL18218925 Binary - Crashed //UE5/Release-5.0 CL16682836 Binary - Crashed //UE4/Release-4.27 CL Binary - Crashed Having a level open that contains a ...

"r.SetRes 1920x1080f" fails to set fullscreen mode when executed through blueprint node

UE - Graphics Features - Jan 19, 2016

Executing the r.SetRes _x_f command fails to set fullscreen mode when executed through blueprint node. The issue occurs when executing the command through level blueprint and an actor blueprint plac ...

Equals (==) node in blueprint is case sensitive for the Cyrillic alphabet

UE - Foundation - Core - May 21, 2015

If two strings or names are compared in blueprint using the Equals (==) node, it is not case sensitive in English. It is case sensitive in Cyrillic however, even though it should be the same functio ...

Custom TouchInterface doesn't fade to Inactive Opacity

UE - Platform - Mobile - Jan 12, 2016

Custom TouchInterface doesn't fade to Inactive Opacity User Description: Virtual Joystick always show on screen, even if Time Until Deactive is 0.00001. ...

Make array node elements break when editing struct elements

UE - Gameplay - Blueprint - Sep 23, 2015

If a Make Array BP node is connected to a structure, using the "Split Struct Pin" and "Remove Array Element Pin" options causes array elements numbers to change randomly. ...