In Standalone mode, when reading world partition actor descriptors for BP actors, "bIsSpatiallyLoaded" receives its value from the native base class instead of the BP class, so BP actors are loaded/unloaded based on the wrong condition.

UE - World Creation - Worldbuilding Tools - World Partition - Oct 15, 2024

Consider an actor defined in C++ with "bIsSpatiallyLoaded" set to true (the default), and a derived blueprint that overrides "bIsSpatiallyLoaded" to false. Now consider an actor instance of that blu ...

Using Delay with Tick when Paused doesn't work

UE - Gameplay - Blueprint - May 28, 2015

Using a delay node in an event graph of actor using tick when paused will not work. It pauses the delay node. ...

Starting position of physics simulated bp is different in Standalone Game

UE - Simulation - Physics - Feb 26, 2016

Starting position of physics simulated bp is different in Standalone Game User Description: Things work fine in the editor window, but when I run a standalone game then blueprints with physics bod ...

Calling BodyInstance.UpdateBodyScale displays erratic behaviors and does not update the rendering scale

UE - Runtime - Simulation - Nov 22, 2024

Calling BodyInstance.UpdateBodyScale displays erratic behaviors and does not update the rendering scale. The licensee has reported and presented a repro project that displays the erratic behavior of ...

Crash after importing a 16k Normal Map while Unreal Real is Preparing Texture

UE - Texture - Sep 12, 2022

This is a regression tested in //UE4/Release-4.27 cl18319896 Editor crashes after importing a 16k Normal Map while Unreal Real is Preparing Texture. Other non-normal maps seem to work without issue ...

Linux crash on Import

UE - Platform - Linux - Jun 2, 2016

Attempting to import content into a project causes the editor to crash on Linux ...

Crash in GC - FSharedStruct reachability race condition

UE - Core - Systems - Jul 13, 2026

This Jira was created from the linked EPS case: =============================================== This issue is caused by FSharedStruct batching reachability requests to the same underlying FInstan ...

Crash opening TM-DistanceFields in editor on Mac

UE - Graphics Features - Jul 5, 2017

QAGame is crashing when opening the TM-DistanceFields map in editor on Mac Crashreporter is not showing up for this crash so no link to CR website is available. Does not occur on Windows. ...

Linux crashes in the Project Browser without using the -nocef command

UE - Platform - Linux - Feb 22, 2022

When opening Unreal Editor on Linux, the Project Browser opens but is completely unresponsive. Shortly afterwards the editor will crash. If you use the -nocef command when opening the Editor, everyt ...

Linux crash when Exporting content

Tools - Jun 2, 2016

When the ExportAll window is opened, changing the file type filter and attempting to edit the chosen file field causes the editor to crash. ...