Fixed a regression in the Bullet solver from 21.0 (or 20.5.412) which could cause soft constraints to be unstable in specific scenarios, when the rest length was initially zero but increased over time (e.g. due to plasticity).

Fixed an issue where the asynchronous PDG importer would error when using existing materials.

Improved the stability, efficiency, and accuracy of the APEX Animate viewer state's Dynamic Motion tool.

Fixed missing undos when moving items or folders in the Animation Catalog

Updated the Animation Catalog to handle conflicts when moving folders by prompting the user whether the conflicting folder should be merged, replaced, or skipped.

Fixed an Animation Catalog bug that prevented new folders from being created if the parent folder previously contained a deleted folder of the same name.

Fixed various bugs related to deleting or undoing the deletion of Animation Catalog folders where the folder names could get mixed up or could no longer be deleted.

Fix oversized vertical margin around HUD toggle. Fix draw artifact when accepting input in LabelEdit.

Updated RBD Car Transform SOP's help card with the Animation Offset parameters.

Changed "Depth Image" image type output to view space depth in the Flipbook ROP. Before this change, the Flipbook ROP would output the raw depth image from the Vulkan render, which is different from the output of the OpenGL ROP. This change makes the Flipbook ROP output consistent with the OpenGL ROP.

Fixed a bug in the APEX Animate viewer state's locator and dynamic motion tools where changes to the settings such as the locator's colors or the path's length would not save when exiting the viewer state.

Fixed an issue where the uniform fog effect would use incorrect depth values which caused fog to appear reversed or at an incorrect position.

Fixed an issue where the Vulkan viewport render would ignore the far clipping plane when using reverse depth with a camera set, causing incorrect depth compositing and incorrect results in the Flipbook ROP.

Fixed a bug where using Reverse or Complement on ramps would create an extra undo action.

Backport for r515914 and r516323 - Fix Stage Manager crash when using the Duplicate action in the RMB menu on a prim in the python panel. Fixed a bug where copying multiple items in the tree sometimes caused a null parent item due to it being weakref object. Fixed a bug where the tree was unnecessarily refreshed after a paste op, resrting the scroll position and selections. Centralized the visibility and activation icons in the tree. Fixed a bug where selecting items in the tree were being ignored due to recursive callbacks. Disabled double clicking on the visibility and activation columns.

Fix Stage Manager crash when using the Duplicate action in the RMB menu on a prim in the python panel.

A SOP Copnet set to fetch the cop's input; where the cop's input is wired to an output-of-all-port; will no longer crash.

Fixed an issue where opening the Context Option Editor multiple times would create multiple duplicate windows.

Fixed an issue where manipulating multiparms with collapsible folders in them would cause the view to scroll upwards.

Fixed a bug where DOPs would sometimes lose their time dependency in the viewer when diving in and out of DOP networks.

Fixed a bug where DOPs would sometimes lose their time dependency in the viewer when diving in and out of DOP networks.

Added the Fetch COP.

New Unreal->Mesh translator code which allows more efficent data transfer and fixes several issues related to the Reference Input Manager when a mesh is used multiple times in different inputs.

The launcher now installs optional SHFS files in addition to required SHFS files when installing from a .iso file.

Internal updates to accessors.