Emitter Initial Location breaks when using Orbit module

UE - Graphics Features - May 30, 2017

Emitter Initial Location (EIL)module will cause the emitter with the module to follow whatever other emitter is set. If the emitter being followed has an Orbit module, the first emitter does not fo ...

Anim Graph will hang if the Draw Debug Sphere and Set node are connected and compiled

UE - Anim - Runtime - Anim Blueprints - Jun 8, 2023

anim blueprint hangs when compiled. Probably a cyclic issue when compiling. A workaround is to add a delay of any time between the set node and the Draw Debug Sphere node. Repros in the following v ...

LandscapeSplineMeshesActor instances not deleted when World Partition is disabled

UE - World Creation - Worldbuilding Tools - World Partition - Oct 30, 2024

When landscape splines exist in a WP level, LandscapeSplineMeshesActor instances are created to allow streaming of splines. In a non-WP level, splines are components of the landscape actor. When a W ...

Structure variables in Child Blueprints do not maintain the default values set in their Parent Blueprints

UE - Gameplay - Blueprint - Jan 12, 2015

Values changed to an inherited Struct variable in a Child Blueprint will be kept after compile, but any not changed will be set to 0s. ...

Saving an asset after renaming it, if it wasn't saved before that, can cause it to exist without being visible.

Tools - Jun 1, 2015

If you 'Save All' after renaming an asset after it's creation, without any saves prior, it will appear in the windows explorer's content folder but will not be visible in the editor. ...

Failed Import Error Message Appears on Components in Child Blueprints

UE - Gameplay - Components - Dec 2, 2015

Creating a C++ class based on actor and adding components to it will build successfully and work as expected. However, creating two child blueprints of a parent that is based on that C++ class and p ...

Can't save map warning with Create Dynamic Material Instance node using wrong input

UE - Gameplay - Blueprint - Dec 18, 2015

When using a Create Dynamic Material Instance node the Get Material node will plug into the World Context Object rather than the Parent input. This will cause a error to be thrown that does not allo ...

Hide softkey feature in Galaxy S8 leads to input lag when trying to receive input into text box.

UE - Platform - Mobile - Jul 24, 2017

Hide softkey feature in Galaxy S8 leads to severe lag/freeze when trying to insert character into textbox in UMG. This feature is updated for Global version(Mali) for now(7/24/17) So you might need ...

Incorrect values filled for nativized struct arrays when resized and packaged

UE - Gameplay - Jun 4, 2018

When packaging a resized structure array it changes the array value to a large incorrect number. Testing the struct in PIE yields expected results. ...

Child Animation Blueprints Do Not Get Recompiled Correctly

UE - Gameplay - Jan 7, 2020

The child of an animation blueprint is not properly recompiled when the it's parent is compiled. Found in 4.24.1 CL#10757647 ...