Can't set "r.Shaders.Optimize" to false in UE5.4

UE - Rendering Architecture - Shaders - Jun 7, 2024

The CVar "r.Shaders.Optimize" cannot be set to false from DefaultEngine.ini in the section "[ShaderCompiler]" as its help text describes. Also tested on UE5-Main, CL: 34200103 ...

PostReplicatedChange called for fast array item even when no values change

UE - Networking - Jun 7, 2024

Unless a property is set to REPNOTIFY_Always, we compare the property's received value to the current value on the client before calling the OnRep function. However, when determining if a fast array ...

Material doesn't apply with Linux packaged game

UE - Editor - Content Pipeline - Import and Export - Jun 6, 2024

InlineEditConditionToggle behavior present for UProperties even when InlineEditConditionToggle property specifier is not used

UE - Editor - Workflow Systems - Jun 6, 2024

Reported by customer: It seems like in some cases, even when the InlineEditConditionToggle property specifier is not used, the behavior it enables is turned on anyway. It's possible to disable it w ...

LoadingScreen by MoviePlayer doesn't support Material in UE5.4

UE - Editor - UI Systems - Jun 6, 2024

An assert crash is now triggered when set a widget using material to WidgetLoadingScreen of FLoadingScreenAttributes then call FDefaultGameMoviePlayer::SetupLoadingScreen(). The ensureMsgf in quest ...

5.4 Bug - create constraint blueprint node stopped working

UE - Anim - Rigging - Jun 5, 2024

Constraint Actor to Rig with Editor Utility Widget is working for the first time adding to the Sequencer. However if it was deleted and added to Sequencer again, run Scripted Actor Action shows Err ...

Instanced object in an array property of an actor component is invalidated and marked for garbage collection on undo

UE - Gameplay - Jun 4, 2024

If an actor component contains a TArray of instanced objects, some of those object instances can get incorrectly invalidated and marked for garbage collection in certain situations, possibly resulti ...

Case Child Actor Component validation error when set as editor-only

UE - Gameplay - Jun 4, 2024

When a blueprint actor with a child actor component is placed in a level, and the child actor component is set as editor-only, the output log will show a validation error when the actor is moved and ...