When deleting a Struct Variable and undoing it, it removes all rows from related Datatables

UE - Gameplay - Jan 8, 2018

When undoing variables in a Structure it clears the referenced Datatable of all its rows. However deleting and just adding a new variable works fine. Repeated undos have the chance to add back the ...

Breakpoints in default Pawn class are not triggered in Debug mode

UE - Foundation - Core - Jul 27, 2015

When running the editor through VS debug mode, any breakpoint that is set in the class used as the Default pawn class in world settings will be ignored when playing in editor ...

STAT_VolumetricLightmapBuildData is not counted correctly

UE - Graphics Features - Dec 9, 2022

STAT_VolumetricLightmapBuildData isn't counted correctly. It seems that the root cause is Volume.IndirectionTexture.DataSize is set to 0 before STAT_VolumetricLightmapBuildData is decreased.// Prec ...

Construction Script fires multiple times when the Const Script is compiled

UE - Gameplay - Blueprint - Apr 30, 2015

Construction Script fires multiple times when the Const Script is compiled. If the character is moved on the grid in the level, it will only fire once. It only seems to be an issue on bp compile. ...

There's no efficient way to pause/resume widget animations

UE - Anim - Sequencer - Jul 27, 2017

The implementation of UMGSequencePlayer::Play and UMGSequencePlayer::Pause are not conducive to being able to efficiently pause and resume animations. Some problems that need to be addressed: 1. ...

Comment Box Clipping Words

Tools - Nov 10, 2014

In Blueprints or Material Editor, when typing a long description (particularly with a line ending on a space) the text will become clipped at certain zoom levels resulting in the word wrap feature f ...

Crash when generating mip maps for texture

UE - Graphics Features - Dec 23, 2019

Generating mip maps results in crash and seems to duplicated 1x1 mip level. NOTE: The bug was originally reported in 4.23.1, however, for some reason I was able to open the texture in 4.23.1 afte ...

'Show Only Selected' Option Hides Selected Group Actors

Tools - Dec 16, 2014

When attempting to isolate selected actors using the 'Show Only Selected' visibility option, grouped actors under this command will disappear and leave green spherical bounding wireframes indicating ...

Undoing a change to the content of a Text widget while it is still selected causes an assert

UE - Editor - UI Systems - Jul 17, 2018

Hitting undo on a text widget while it is still selected will cause an assert. This appears to happen because the widget loses focus and attempts to commit it's text while still processing the undo, ...

BP Component is not destructible if the Object Type is set during runtime

UE - Simulation - Physics - Destruction - Mar 16, 2015

BP Component is not destructible if the Object Type is set during runtime. If the Object Type is set manually before PIE is started, the BP component will destroy correctly. ...