Separate translucency rendering and material BumpOffset UV issues

UE - Rendering Architecture - Oct 20, 2023

It appears as if the primary screenpercentage is being sent as the screen size to separate translucency materials, even though separate translucency has its own screenpercentage (r.SeparateTransluce ...

Volumetric fog black and not updating with real-time capture skylight

UE - Rendering Architecture - Oct 20, 2023

It looks like the skylight is not updating the CPU side SH values when Real Time Capture is enabled, and thus old/empty values are sent to the fog. ...

Selecting an asset directly in a blueprint method parameter asset selector fails when the parameter type is an interface.

UE - Gameplay - Blueprint Compiler - Oct 20, 2023

Ensure message: Ensure condition failed: false [KismetCompilerVMBackend.cpp][Line: 1076] It is not possible to express this interface property as a literal value! (InterfaceProperty /Script/BugRepr ...

Overriding a struct member field's default value on a BP-added component in a BP asset will no longer allow the user to edit that struct member on instances of that BP's component if the member is deprecated.

UE - Gameplay - Blueprint - Oct 19, 2023

Properties that are deprecated are (incorrectly) not currently being propagated to instances by the duplication logic that we use to instance BP-added components as part of Actor-based BP constructi ...

Possessable bound to Spawnable in parent sequence will break if its the only binding in the subsequence/shot

UE - Anim - Sequencer - Oct 19, 2023

Possessables bound to spawnables in parent sequences can break after the parent it de-spawned.  ...

Unexpected corrections when sliding against other characters

UE - Gameplay - Player Movement - Oct 19, 2023

We are seeing unexpected movement corrections sometimes when pushing one player character up against another character that isn't moving, or against other static primitives that have round features ...

Reintroduce UE4 Material Layer drag & drop behavior in UE5

UE - Rendering Architecture - Materials - Oct 19, 2023

This behavior has changed from UE4 to UE5 due to a fix to an unrelated bug ([Link Removed]). Reintroduce the old behavior without causing a regression that reintroduces Ben's fixed bug. ...

MPCook: Fix replication of UObject::CookAdditionalFilesOverride

UE - Foundation - Core - Cooker - Oct 19, 2023

MPCook relies on global data that is accumulated during package cooks on CookWorkers be replicated to the CookDirector. Some global data that is accumulated during package cooks is CookAdditionalFi ...

Non-existing config file loading could cause memory leak

UE - Foundation - Core - Oct 19, 2023

The cause of this problem is the Engine has code paths which register a new allocated object to Map without deleting the previous object. In the repro project, whenever hitting Space Bar, the level ...

Deprecating a non-const blueprint interface function replaces the implementation of the event with an empty custom event

UE - Gameplay - Blueprint - Oct 19, 2023

This behaviour is only observed when implementing the function as a custom event from a blueprint interface. This behaviour is not observed in actors where the blueprint interface function is implem ...