Assertion thrown while deleting a Curve from a Control Rig asset - DetailsViewWrapperObject.cpp: 231

UE - Anim - Rigging - Control Rig - Apr 1, 2022

Assertion thrown while deleting a Curve from a Control Rig asset.  ...

Compiling a Blueprint that references a deleted Macro from a Custom Macro Library will crash the editor

UE - Gameplay - Blueprint - Sep 3, 2015

Compiling a Blueprint that references a deleted Macro from a Custom Macro Library will crash the editor. Crash Report: [Link Removed] This is a regression: did NOT occur in 4.8.3. Reproduced in 4. ...

FMovieSceneTrackCompilerArgs :: DefaultCompletionMode Becomes Undefined Value Using Add New Camera and CameraCut Button of Sequencer

UE - Anim - Sequencer - Apr 27, 2018

FMovieSceneTrackCompilerArgs::DefaultCompletionMode is undefined value in UMovieSceneTrack::Compile if using add new camera and cameracut button of sequencer. When creating another track, processin ...

Binding to a component event in blueprint and then deleting the component does not cause compiler errors on remaining events

UE - Gameplay - Blueprint Compiler - Feb 7, 2020

Blueprint events associated with a component within a blueprint graph do not cause compilation errors in either a base or child blueprint if the component is then deleted, leaving the event behind w ...

If any light source is deleted, and a single light has its visibility state changed in LightMixer, all the other lights in the scene that were invisible turn visible

UE - Virtual Production - Tools - Jul 31, 2025

If any light source is deleted, and a single light has its visibility state changed in LightMixer, all the other lights in the scene that were invisible turn visible. The behavior only shows after d ...

Renaming a function for a text block and switching tabs will cause editor to crash

Tools - Oct 28, 2014

If you place a text block into UMG and then click on bind for the text in that text block (in the details panel) it will make a function. If you rename said function and then click the designer tab ...

Tools>Debug>Modules button may not appear

UE - Editor - Workflow Systems - Oct 26, 2022

This is due to Plugin loading order. If the EditorDebugTool plugin is loaded before *SourceCodeAccess( in exsample : VisualStudioSourceCodeAccess ) plugin is loaded, CanShowModulesTab() returns fals ...

Fix Up Redirectors does not affect redirectors within renamed folder

Tools - Sep 23, 2016

Fix Up Redirectors does not affect redirectors within renamed folder. ...

All Frames Are Not Fully Deleted From Animation Sequence When Attempting to Create an Aim Offset

UE - Anim - Runtime - May 9, 2022

Occurs 3/3 Times *Regression *does occur: Tested in //UE4/Release-4.27.2 @ CL18319896 and all frames were able to be deleted from the Aim_Space_Hip Animation sequence.  ...

Select button does not show up after the "Pick Parent Class" window loses focus

UE - Gameplay - Blueprint - May 1, 2017

If the "Pick Parent Class" window loses focus, the select button will not be available for the previously selected option ...