Unreal Engine Issues

“None” option removed from “Preview Game Language” in Editor Preferences since UE 5.6

In Unreal Engine 5.5 and earlier, users could select “None” as the Preview Game Language in the Editor Preferences. Starting from UE 5.6, this “None” option is no longer available. Based on source ...

Swarm Agent Binaries Missing in Launcher 5.7 Preview

The Swarm binaries are missing from Engine\Binaries\DotNET in the 5.7 Preview launcher version of the engine. This causes any lighting build or precomputed static visibility builds to fails due to t ...

Video length indicator no longer works

Reported in SF [Link Removed] In videos containing multiple parts, the cumulative time indicator that shows the full length of the video no longer works correctly and will incorrectly display a len ...

In the GameUserSettings class, Landscape quality is not taken into account by GetOverallScalabilityLevel, but is changed by SetOverallScalabilityLevel.

Context: GameUserSettings stores user settings for a game, for example graphics and sound settings. The Scalability settings provide a way for to adjust the quality of various features in order to m ...

GeneSplicerModule has linking errors in a Development target

The FArchiveMemoryStream class is defined in GeneSplicerModule and RigLogicModule. This generate linker error as this doesn't respect the "One Definition Rule"  1>Module.GeneSplicerModule.cpp.ob ...

Curve Debugger window is broken when viewing curves in the Anim Sequence editor

The curve debugger is currently broken when viewing curves on anim sequences. It seems that only metadata/skeleton curves are displayed, and those aren't updating correctly or showing their type (m ...

Presenter Cloud will fail Uploading and Processing with almost empty scenes

All Megascan asset libraries are missing

All Megascans assets no longer appear in Twinmotion 2025.2 hotfix (46767548). Other libraries do not appear to be affected. ...

Ensure triggered in FBoundsCacheElement::GetValue when adding ISM instances in Construction Script

An ensure is triggered in FBoundsCacheElement::GetValue when adding instances to an InstancedStaticMeshComponent inside a Blueprint’s Construction Script. This occurs when the ISM component is navig ...

CppCompileWarningSettings.NonInlinedGenCppWarningLevel messages should contain Warning\Error

The messages emitted when CppCompileWarningSettings.NonInlinedGenCppWarningLevel is set to Warning\Error should contain the literal so the tools pick them up and react accordingly. From the EPS c ...