If DeferRunningConstructionScripts is executed in LoadMap, BeginPlay will be executed before ConstructionScripts.

UE - CoreTech - Jun 22, 2022

DeferRunningConstructionScripts has been added as a workaround for a issue by asynchronous mesh compilation, but it doesn't consider BeginPlay. Therefore, if DeferRunningConstructionScripts is execu ...

Hide Categories in a blueprint will not affect categories in inline components

UE - Editor - Workflow Systems - Oct 12, 2022

This occurs because ObjectPropertyNode.h will only check if a category is hidden for it and its subclasses. It should also be checking the parent's categories if it's an edit inline component. ...

Alt+Enter after using the "Stereo on" Command will lock the computer

UE - Platform - XR - Dec 2, 2014

With an Oculus Rift connected, if Alt+Enter is pressed after using the console command "Stereo on" in a standalone game the computer / VR headset will freeze. ...

Template_Default.umap and Template_Default_BuiltData.uasset will be changed each time after cook.

UE - Foundation - Core - Cooker - May 10, 2018

Each time after cook the Template_Default.umap or Template_Default_BuiltData.uasset are changed. But if I move Template_Default.umap to the project content folder, they will be the same as the las ...

Mobile Preview - Custom Stencil 4.23 Regression

UE - Platform - Mobile - Oct 25, 2019

Regression when using custom stencil with in-editor mobile preview. This does NOT reproduce in MAIN at CL 9730599 ...

Possessing a vehicle results in unexpected physics behavior

UE - Simulation - Physics - Oct 8, 2015

When possessing a vehicle, if you are standing on top of it with a character, once you begin to drive away, the vehicle will begin to be drawn back towards the character as if it is attached somehow ...

Hot reload causes placed actor to lose variable references

UE - Foundation - Cpp Tools - Hot Reload - Nov 9, 2017

Preforming a hot reload causes placed actors to lose code based variable settings. More repro steps: 1. Open UE4Editor.exe 2. Create a First Person Code project 3. Build the project for Developme ...

Character floats off of ramp when walking into a wall that is slightly sloped

UE - Gameplay - Player Movement - Mar 24, 2017

Character floats off of ramp when walking into a wall that is slightly sloped. The wall angle is well above the walkable floor angle but the character seems to start walking up the wall regardless. ...

A Blueprint containing an array Swap node will fail to be nativized.

UE - Gameplay - Blueprint - Jul 17, 2020

Blueprint assets that utilize an array "swap" node to swap elements cannot currently be converted to C++. Current workaround: Either avoid use of the "swap" node or exclude the Blueprint asset from ...

Actor Component will not trigger other latent actions while paused if there is no Event Tick

UE - Gameplay - Components - Apr 27, 2017

An Actor Component set to Tick When Paused will not update latent actions when paused if there isn't an enabled Event Tick node in it. ...