Added internal tests for Unreal presets.

Python States - Delay node change event setup

• Fix a bug in the python states support that could potentially lead to anexception if node events are sent during an `onEnter` callback.

Packages - browser package editing bug

• Fix a bug in the browser to avoid reloading a deactivated package after editing.

Fixed an issue where level instances would not always bake in non-world partition levels.

Fixed missing parameter descriptions in the help tool tips of the ROP GLTF Output SOP node.

Improve performance for pick id render passes with large number of primitives

Change element index layout for meshes with no vertex attributes giving some performance improvement for some scenes

• Fix Bug where face selection would not handle the front only or back only option
• Fix transparent objects not recieving shadows
• Fix Bug where wrong instances would be highlighted when doing point selectionon an instanced primitive

Fix a viewport crash in some high VRAM usage scenarios

Added new %payload primitive pattern auto collection which matches any prim with a payload composition arc.

When collapsing nodes to a subnet in COPs, the output type will be set from the input type of the output node, rather than the output type.

Fixed a performance regression with packed prims in both Vulkan and GL renderers.

Fixed issues in the Instancer LOP with transferring indexed primvar values when the Method parameter was set to any mode other than Point Instancer.

Fixed an issue where a LOP node that uses context options in parameter values could cook unnecessarily, get mysterious warnings on the node, and not show expected results in the parameter dialog.

Fixed a crash in the Instancer LOP when using an indexed primvar as the prototype index, name, or path attribute.

Added C# bindings of the Houdini Engine API now available under the 'engine/bindings/csharp' folder of the Houdini installation directory.

Fixed a bug with Education licenses not fully changing the application over to an education application.

Fixed potential crashes or unexpected behaviour in the Instancer LOP when the source of the target points was a USD points primitive and its 'widths' or 'normals' attribute had constant interpolation.

Fix a regression in the package browser when creating/installing packages.

Fixed a bug where applications using oauth2 keys could hit the case where refreshing the access token failed. If it failed the application would never be able to refresh the access token again this resulted in the application needing to be restarted. This has since been fixed where the application will make several attempts to refresh the access token and if those fail it will still allow refreshing the access token in the future. As a result the application will not require restarting in these cases.

Fixed a bug where applications using oauth2 keys could hit the case where refreshing the access token failed. If it failed the application would never be able to refresh the access token again this resulted in the application needing to be restarted. This has since been fixed where the application will make several attempts to refresh the access token and if those fail it will still allow refreshing the access token in the future. As a result the application will not require restarting in these cases.

Fixed a bug with subnets in Remote TOP Graphs copying input nodes into the subnet, for each Input inside the original subnet. In addition to causing the graph to have an excessive number of nodes, this was also causing unecesarily large .hip file sizes when saving a TOP network with a Remote Graph node in it.

Fixed a bug with the Delete Files... menu entry only listing and deleting files from a subnt's output node, instead of applying to all nodes inside of the subnet.

Fixed a bug in the Convert Line SOP that could prevent some primitive and vertex attribute values from being transferred to the resulting lines.

Fix a recently itroduced issue where marking all root prims as invisible in the scene graph tree could cause Houdini to crash.