Performing a hot reload on a project that contains an FStringAssetReference will crash the Editor.

UE - Foundation - Core - Mar 10, 2015

Performing a hot reload on a project that contains an FStringAssetReference inside a struct results in a crash. This was reported to work fine in 4.6.1, but I was unable to verify that is the case. ...

Pawns using Floating Pawn Movement will teleport to the location specified in Move To Location

UE - AI - Jul 14, 2015

Pawns using Floating Pawn Movement will teleport to the location specified in Move To Location. From fix CL 2619989: "Fixed FloatingPawnMovement component's issue when controlling AI pawn. Basicall ...

Throbber widget could eat up all of your RAM

UE - Editor - UI Systems - Jan 22, 2015

A user has reported that they could BSOD (Blue Screen Of Death) their computer by putting in 999999999999 as the number of pieces for the throbber widget. While I was unable to produce this on our s ...

Shadow Physics Assets drop-down is visible in the Destructible Mesh Editor

UE - Simulation - Physics - Destruction - Aug 10, 2016

The option to assign a Shadow Physics Asset is located in the Destructibles Details panel even though they are only supported for Skeletal Meshes currently. This assigned shadow physics asset cannot ...

Editable Text Box crashes game on iOS

UE - Platform - Mobile - Jan 12, 2015

Clicking on an Editable text box on a mobile device will causing the project to crash on the device. Tested on an iPad Air 2 (8.1) The crash does not occur on Android. Log files are from xcode ...

Spin Box delta does not appear to affect how the spin box increments through its values when clicking and dragging with the mouse

UE - Editor - UI Systems - May 12, 2017

Spin Box delta does not appear to affect how the spin box increments through its values when clicking and dragging with the mouse. The spin box appears to increment/decrement by more or less dependi ...

Adding a code class derived from AnimInstance to a project created using the code Vehicle template will cause the Visual Studio build to fail.

UE - Gameplay - Dec 1, 2014

Adding a new code class derived from AnimInstance will cause the Visual Studio build to fail in a project based on the code Vehicle template. The build errors indicate that there are problems in the ...

Hidden enumerator variables can cause the enumerator to become broken with the Select node in blueprints

UE - Gameplay - Blueprint - May 26, 2015

If a user makes an enumerator in C++ and sets one of the variables to Hidden and doesn't make it the last variable of the enum, it will cause issues with the numbering of the enum when using the Sel ...

[StateTree] Reentering current state immediately after exiting does not reset variables on tasks with "Should State Change on Reselect"

UE - AI - StateTree - Nov 7, 2024

Context State Tree Tasks have a configurable default value 'Should State Change on Reselect' which controls whether the task receives a EnterState/ExitState if completion of the current state is fo ...

Crash when attempting to save Soft Object Reference

UE - Gameplay - Blueprint - Aug 13, 2018

Engine will crash when attempting to save soft object reference. "FArchive does not support FSoftObjectPtr serialization. Use FArchiveUObject instead." Also reproduced in Main CL #4247864 ...