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 ...

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 ...

World Position Offset invalidates Point Lights Entire Virtual Shadow Map Cache when light frustrum is only overlapping a small portion of the mesh

UE - Graphics Features - Oct 22, 2025

When adding a spotlight to the scene it does not correctly use cached virtual shadow map pages when the spotlight overlaps a mesh using WPO. This can be most easily observed by entering 'Cached Pag ...

Body elements of a Paper Terrain Spline Data Assets do not have collision

UE - Gameplay - Paper2D - Mar 8, 2015

Body elements of a Paper Terrain Spline Data Assets do not have collision. When the second handle is dragged to lengthen the spline, only the Start and End Caps show collision. The end cap will show ...

Creating a new Physics Asset will override the behavior of the previous Physics Asset inside the Phat Editor

UE - Gameplay - Aug 11, 2016

Creating a new Physics Asset will override the behavior of the previous Physics Asset inside the Phat Editor. This seems to be linked to which physics asset is currently assigned to the skeletal me ...

Memory Increase with mouse over Content Browser with AnimBP visible

UE - Editor - Content Pipeline - Content Browser - Aug 12, 2016

Memory Increase with mouse over Content Browser with AnimBP visible ...

Crash in FObjectReplicator::StartReplicating when removing replicated uproperty and hot reloading with two players

UE - Networking - May 10, 2016

The editor crashes when the user removes the replicated uproperty from a variable and tries to hot reload while a PIE session with two players is still active. This issue was found while trying to ...

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 ...

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. ...

Actor in Map in Struct Causes Crash When Changed

UE - Gameplay - Blueprint - Mar 8, 2018

User submitted bug. Editor will crash after changing key or value in Map. ...