Adding new elements to an array in code does not update in a class based blueprint on compile

UE - Gameplay - Blueprint - May 5, 2015

When adding elements to an array inside a code class, blueprint instances of the class do not have their array updated after a hot reload. ...

Changing Blueprint Interface's Const Status Doesn't Update Blueprints its Already Implemented In

UE - Gameplay - Blueprint - Nov 8, 2016

Implementing an interface that contains const functions and later attempting to change these functions to be non-const does not update the status of the functions inside of the actor they are implem ...

Attempting to build MinidumpDiagnostics with Visual Studio 2015 Update 2 results in failure

UE - Foundation - Core - Jun 7, 2016

When attempting to build the Minidump Diagnostics project from the UE4 source, it will fail if you're using Visual Studio 2015 Update 2. Please note that this does not occur in the base VS2015 or wi ...

When the engine version updated, partial data of TMap/TSet type of DataTable is missing

UE - Foundation - Core - Jan 7, 2019

When updating to 4.21, Element previously added to DataTable is missing. This only occur when you move to 4.21. If it change from 4.19 to 4.20, DataTable will keep data. it can restore broken data b ...

SetMaterial allows the user to add a Material which updates the GetMaterials array but not GetNumMaterials

UE - Gameplay - Jan 15, 2015

SetMaterial allows the user to add a Material which updates the GetMaterials array but not GetNumMaterials. The user who reported this was trying to add a material to a skeletal mesh during runtim ...

Compiling Unreal Lightmass Fails When Using Visual Studio 2015 Update 2

UE - Foundation - Core - Apr 4, 2016

When attempting to compile Unreal Lightmass in the 4.11 source build, a compiler error pops up when using Visual Studio 2015 Update 2. Error Message: "d:\unrealengine-release\engine\source\program ...

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 ...

Animation Montage Details Panel Closes When Attempting to Update Animation Segment Data

UE - Anim - Runtime - Apr 27, 2022

Occurs 5/5 times. Details panel in Animation Montage goes blank when fields (Start Time, End Time, Play Rate, Loop count) are clicked in to update data. This defect also occurs when clicking in th ...

When updating stats on a Steam leaderboard, the only option currently available is to add the new value to the old value.

UE - Online - Dec 23, 2015

When trying to update a Steam leaderboard, the source code currently adds the new value to the old value instead of replacing the old value with the new value. This works fine for something like a T ...

Packaging a DLC Plugin Fails with "Couldn't Update Resources" Error

UE - Foundation - Core - Cooker - Mar 14, 2017

Attempting to package a plugin as DLC is failing with the following error message: Program.Main: ERROR: AutomationTool terminated with exception: System.Exception: Couldn't update resource However ...