Unreal Engine Issues

Steam Sessions fails to create when using the Create Session node

This is a Regression. 4.26.2 - Binary - no issue creating a session. 4.27.1 - Binary - no issue creating a session if you convert a previously working 4.26.2 project. 4.27.1 - Binary - Fails to c ...

RebuildHLOD UAT script doesn't properly handle the -nop4 command line flag

The script performs P4 commands even if -NoP4 was specified. It should properly handle -NoP4 by checking for  if (CommandUtils.P4Enabled) ...

Unexpected behavior when Actor Parenting in the World Outliner of a WP map

Licensee reports the following in the UDN: There seems to be some other erratic behavior when using parenting in world outliner (i.e. drag and drop one actor on another one in world outliner).Since ...

Subtraction Node wild card inputs incorrectly assigns Time Span data type when given a Date Time data type

This is a regression //UE4/Release-4.27 has "DateTime - DateTime" and a "DateTime - TimeSpan" node. The subtraction node, with wild card inputs, incorrectly assigns Time Span data type when fed a D ...

JSON Serializer FromJson function returns true when property types don't match

If the type of a property in a Json string doesn't match the expected type in the Json serializable class being created, then the value for that property will not be read in. However, FromJson still ...

Duplicate keys in TMap and TSet after using FJsonObjectConverter::JsonValueToUProperty

Found here: [Link Removed] The relevant sections in ConvertScalarJsonValueToFPropertyWithContainer() use script helpers to add defaulted elements to each container and then parse straight into them ...

Report of branching point notifies failing to trigger

The problem seems to come from a notify having its LinkedMontage set to null when RefreshBranchingPointMarkers() is called. IsBranchingPoint() fails in this case, so it's never registered as a branc ...

Valve Index Controller Device Visualization Models are misaligned with their physical counterpart

Mesh LOD Coloration mode does not work with EyeAdaptation node

Travelling between two levels that share a sublevel will not update the positions of those actors in that sublevel

If you travel between two levels that both share the same sublevel then the actors within that shared sublevel will not update their positions regardless of their positions being saved at different ...