Executing r.setres does not render correctly when Orientation of Display is Portrait on Windows PC

UE - Rendering - RHI - Feb 5, 2021

This issue will display correctly in Portrait if you don't specify a resolution, but using r.setres will display it incorrectly. ...

The LoadTimeFile argument crashes package at startup

UE - Foundation - Core - Feb 1, 2021

IPhonePackger re-signs app with old signature format that makes users get the warning popup on iOS

UE - Platform - Mobile - Jan 27, 2021

Apple forces developers to code sign an app using the latest code signature format and IPP needs to support it. a related link: [Link Removed] ...

Adding a widget to a grid panel inside the grid panel tick can cause an out-of-bounds error

UE - Editor - UI Systems - Slate - Jan 25, 2021

This is caused by adding an item to a grid panel inside the grid panel iteration loop. The same operation to canvas panel goes well without any errors. The difference is that the array iteration in ...

Editor will crash on attempt to load a previously-saved Blueprint asset with a serialized default subobject containing a serialized static array of two or more nested subobject instances.

A crash will result if a Blueprint class that's based on a native C++ class containing two or more nested, explicitly-instanced subobjects referenced by a fixed-size object array property are serial ...

Spawning a Spawnables to a sub-level on the sequencer will spawn to Persistent Level in the case of Editor

UE - Anim - Sequencer - Jan 18, 2021

This feature works fine on Runtime and is spawned to Sublevel. And, once we save the Level, it will be spawned actor to a sublevel even on the Editor. ...

Deterministic cooking issue caused by ParticleModuleTypeDataGPU

UE - Rendering - Niagara - Jan 18, 2021

This problem is similar to the following case. [Link Removed] [Link Removed] It seems to have been fixed in 4.16, but the licensee reported it in 4.25. ...

Data validation FAILED due to IWBE_Blutility containing invalid data

UE - Content - Engine - Jan 11, 2021

4.26[AssetLog] D:\Binary\UE_4.26\Engine\Content\Tutorial\InWorldBlueprintEditing\TutorialAssets\IWBE_Blutility.uasset: Default__IWBE_Blutility_C is not valid. See the MapCheck log messages for detai ...

Spawnable templates can reference other spawnables and their levels in a sequence

UE - Anim - Sequencer - Jan 8, 2021

Spawnable templates can reference other spawnables. These references will be unstable due to the nature of spawnables, and the level reference can lead to unexpected behavior.  ...

DateTime Variable in Sub Widget resets on Compile

UE - Editor - UI Systems - Jan 7, 2021

When attempting to set the default value of a date time in a sub widget the changes are not kept after compiling. ...