Structured log automated decimal number tests fail in languages / cultures that use commas instead of periods

UE - Foundation - Jul 17, 2025

The following Localisation Tests in "Engine\Source\Runtime\Core\Tests\Logging\StructuredLogFormatTest.cpp:275" TestLoc(LOCTEXT("Float", " {Float} "), ANSITEXTVIEW(R"(128.25)")); TestLoc(LOCTEXT ...

Crash when using StaticDuplicateObject with mismathced Source and Destination class types

UE - Foundation - Jun 19, 2025

Starting in Unreal Engine 5.4, StaticDuplicateObject internally switched to using Unversioned Property Serialization (UPS) for performance reasons. However, UPS assumes the source and destination ob ...

Staging a patch does not copy pak signatures when staging

UE - Foundation - Jun 10, 2025

When creating a patch with pak signing enabled the created output folder contains the pak files from the base release but does not contain the .sig files, even if they were enabled when creating the ...

Changes to Instanced Properties default value on BP not propagated to placed actors in the opened level

UE - Foundation - May 15, 2025

In UE versions 5.4 and onwards (as of CL 42589677 in Main), when an Instanced UObject property is defined in an Actor Blueprint, modifying the default value in the Blueprint does not propagate the c ...

InstancedStruct Local Variables do not work

UE - Foundation - May 7, 2025

The licensee has noticed that local variables of type InstancedStruct return nullptr. The setup is a verification of the behavior. Class variables work normally. I've tested this behavior on every v ...

Commandlet Exits With Code -1073741819 and Exception FPlatformMisc::RequestExitWithStatus(1, 3, WindowsPlatformCrashContext.EngineUnhandledExceptionFilter)Engine exit requested (reason: Win RequestExit; note: exit was already requested)

UE - Foundation - Apr 9, 2025

When a commandlet is run it successfully completes but does not terminate the engine correctly. It appears that multiple requests are made to terminate the engine process these subsequent engine ter ...

wrong telemetry provider config section

UE - Foundation - Mar 12, 2025

AddEndpointsFromConfig from Telemetry.cs is searching for StudioTelemetry.Provider.Horde. This appears to be out of sync with StudioTelemetry.Provider.HordeAnalytics mentioned in BaseEngine.ini. ...

Regression: Several project settings, especially from built-in Plugins, are being silently erased when previously they were not, which is perceived as a bug

UE - Foundation - Feb 28, 2025

In UE's Project Settings, some pages are saved automatically to the project's "Config/Default<CATEGORY>.ini" file (meant to be version-controlled) on every change. Other pages have buttons "Set as D ...

Different CRC32 Results for Repeated Hashing of UStaticMesh

UE - Foundation - Jul 15, 2024

1. Download the Licensee repro, compile, and open:https://udn.unrealengine.com/s/contentdocument/069QP00000CdN7WYAV 2. Press the first hatched button on the top bar, next to the Platforms dropdown. ...