UObject set to DefaultToInstanced will show all properties declared at the blueprint level, even in they're private and not instance editable

UE - Editor - Workflow Systems - Apr 19, 2024

Licensee found that when creating a UObject class with DefaultToInstanced and EditInLineNew specified, and then a derived BP was created using the UObject class and used as a variable type in an act ...

Crash at startup when vcomp140.dll prerequisite is missing.

TM - Interoperability - May 3, 2024

Some users are experiencing a Crash at startup because of missing vcomp140.dll prerequisite. ...

[PCG] Undoing the deletion of a pcg actor removes the Instance Category from the pcg component, specifically no graph parameter can be seen.

UE - World Creation - Procedural Tools - PCG Component - Oct 31, 2025

Context: PCGComponents on actors contains a category "Instance" that allows the user to connect a PCG Graph of their choosing to the PCGComponent which allows the Procedural Node Graph to sample the ...

Reflections of Masked Materials incorrect with Lumen HWRT and Max Refraction Bounces > 0

UE - Graphics Features - Lumen - Dec 18, 2025

Lumen HWRT Reflections of Masked Materials are incorrect when "r.Lumen.Reflections.HardwareRayTracing.Translucent.MaxRefractionBounces" is greater than 0. The same issue occurs if the Post-Process V ...

Level Merging creates a new empty level and deletes only one of the two levels merged

Tools - Oct 29, 2014

After merging two levels in the Levels window, only one of the two levels will be deleted and a new level will be created. Any actors in the deleted level will be deleted as well. The new level will ...

Media Sound Wave Does Not Play after Packaging

Tools - Mar 19, 2015

After testing multiple different ways to get a Media Sound Wave to play in sync with the associated Media Player Asset, I feel it is very hard to get the sound to even play. Not mentioning getting i ...

Stationary Directional Lights not Rendering Dynamic Shadows on Mobile

UE - Platform - Mobile - Jan 21, 2016

As the title suggests, dynamic shadows on mobile when using a stationary directional light are not appearing at all when deployed to the device or when viewed in the mobile previewer. The odd part ...

LIVE: Control+Right (Skip Word) in Multi-Line Text Field Freezes Editor

Tools - Oct 30, 2014

In any multi-line text field, scrolling to the end of the last line with the control+right (skip word) command will freeze the editor. In the AnswerHub thread, user twiddle linked to a Pull Request ...

The Merge Actors Tool doesn't account for rotated collision shapes when doing non-uniform scaling

UE - Gameplay - Aug 30, 2016

Collision shapes for merged actors using the Merge Actor tool do not account for the rotation of the actor when combining the data. It looks like the X and Y collision shape rotation in the world ...