Unreal Engine Issues
Unreal Engine Issues
Crash compiling Widget Blueprints that contain Dynamic Entry Boxes with their Entry Widget Class set to each other
UE - Editor - UI Systems - Jun 10, 2020Currently the Dynamic Entry Box has no protection against recursion, leading to a stack overflow and a crash. This issue was reported and tested in 4.25 (CL-13144385). This was reproduced in 4.24.3 ...
World Partition - Deleted actors can become unloaded prior to saving
UE - World Creation - Worldbuilding Tools - World Partition - Apr 11, 2025In world partition levels, deleted actors can become unexpectedly unloaded prior to saving, causing loss of work. Specifically, this issue occurs after the undo history has been cleared (either manu ...
Possible CurlHttp crash on Android dedicated server
UE - Networking - Sep 30, 2016A user has reported that their dedicated server experienced a curlhttp crash after updating to 4.13.1 and left running for an extended period of time. Crash not reproduced internally. ...
Crash when changing shadow scalability settings to low, then clicking in the viewport
UE - Graphics Features - Jun 9, 2016A crash occurs after setting the shadow scalabilty settings to "low" then clicking on an item in the viewport. The issue also occurs when setting all of the scalabilty settings to low at one time as ...
Crash attempting to drive a Pawn with no torque
UE - Simulation - Physics - Oct 24, 2016Crash occurs when the user attempts to drive a non-Vehicle pawn (using a Vehicle Wheel Movement component) with the Torque Curve flattened to 0. I was not able to reproduce this crash when I tried ...
Child Actors should seamlessly travel with their Parents
UE - Gameplay - Components - Dec 22, 2016When an Actor is identified to seamlessly travel, its child actors should also seamlessly travel with it (or maybe it should be an optional flag), rather than destroying and recreating on the other ...
FScopedEditorWorld doesn't clean up old world when going out of scope
UE - World Creation - Worldbuilding Tools - World Partition - Jan 19, 2024In a commandlet, when FScopedEditorWorld exits, it leaves references behind and prevents garbage collection of the PersistentLevel and non-spatial actors. This leads to an issue when a second FScop ...
Compilation error with Evaluate Chooser node when getting All Results from Subclass Of table
UE - Characters - Animation - May 22, 2025Trying to use the Evaluate Chooser node in the All Results mode with a chooser table that returns the Subclass Of type results in a compilation error ("Array of Actor Object References is not compat ...
HLOD generation can run out of space in the FName table
UE - World Creation - Worldbuilding Tools - Nov 26, 2025A licensee reported that generating the HLOD for his large WP based level is running out of space in the FName string table. He tracked the source of the problem to CL 47064601. Upon inspection ...
Unreal Editor crash on Datasmith import with VrayBlend Materials
UE - Editor - Content Pipeline - Datasmith - Importer - Jun 16, 2020It seems like VrayBlend materials are crashing the Engine when importing them with Datasmith. This is a regression from 4.24.3 (CL-11590370) where the file imported successfully. This was reported ...