Unreal Engine Issues

Users can't change flags on asset entries in PSD when the asset was added via a Branch In notify

Assets added to a PSD via a Branch In notify can't have their flags changed within the database. When the flags (like mirror, disable, etc) are changed, they revert back to the original value when ...

AssetRegistry has poor performance when a large map is resaved: Directory IO

IO cost of directory scans is one of the costs present in the AssetRegistry when a large map is resaved. Maps can have external actors which all have to be rescanned and reported to the map for incl ...

ForEachLoop does not save structure changes in the loop body

If a ForEachLoop node is used to cycle through an Array of Structures, using the Array Element output of the Loop node to set the members of the structure does not save the changed values. Workarou ...

Editing InlineEditConditionToggle variable value causes editor to crash

Editing property with InlineEditConditionToggle meta specifier causes the editor to crash. Workaround: Calling Super::PostEditChangeProperty after property changing code prevents crash from occurri ...

Crash when exposing a TOptional<FName> or TOptional<FText> to the editor through a UProperty.

Support for editor-exposed uproperties of type TOptional<T> has been added by CL 28199740 on september 2023. However, since then until today in UE 5.5, a crash can happen when exposing TOptional<FNa ...

Adding new elements to an array in code does not update in a class based blueprint on compile

When adding elements to an array inside a code class, blueprint instances of the class do not have their array updated after a hot reload. ...

AR Core - Apps with Candidate image result in black screen on first launch

On first launch of an AR app with Android the camera passthrough will render black. This also happens if an app is minimized and re-opened. This will not repro if there is no candidate image assign ...

Crash after generating HLODs for merged meshes that have all triangles culled

Crash after adding an AI Perception component to a parent and child character

Crash after adding an AI Perception component to a parent and child character. First they both must have had AI Perception components > Compiled and saved > Then both AI Perception components delete ...

Reference to control rig can be lost on actors with multiple skeletal mesh components

In the attached project, when we initially add a control rig track for the actor with multiple skeletal mesh components, we add the control rig for the correct component because FControlRigParameter ...