Category Visibility
Fixed an issue with the sub-categories of Abutment Categories in the family editor Visibility/Graphic overrides.

Dimensions
Improved stability when working on a view that contains linear dimensions.
Improved stability when editing spot elevations.

Dynamo for Revit
Fixed the issue that Dynamo would fail to launch when the Revit install path includes non-English characters.
Fixed an issue where Dynamo would display blank geometry until regeneration when toggling the setting for Show Edges or Revit Background Preview.

Electrical Circuits
Improved performance when changing the assigned panel for a circuit in a large model.
Improved the performance when editing circuits with a large number of components.

Electrical Demand Factors
Fixed an issue that Load Classification name and element ID are not displayed in the deletion error message when deleting a Demand Factor in use.

Electrical Settings
Improved the performance when dragging/rehosting electrical families to a new location, especially when there are many lighting fixtures in an extremely large space.

Energy Model
Fixed an issue that caused instability when generating the energy model using the Rooms or Spaces mode and a room tag warning appears during the process.
Fixed an issue that caused analytical spaces to be assigned to thermal zones and zone equipment incorrectly when using the Use Rooms or Spaces mode to create the energy analytical model.
Fixed an issue that caused instability when generating the energy analytical model.

File Open/Save
Improved stability when saving a model during unstable network status.

Graphics
Fixed an issue that caused a pipe accessory family, that uses an annotation symbol instead of linework assigned to the pipe accessory category, to not display correctly with annotation scale enabled.

Grids
Fixed an issue related to drag grid endpoint.

Help
Resolved the issue that Autodesk Account is not automatically signed in when launching help a link from Revit.

Keyboard Shortcuts
Fixed an issue that custom KeyboardShortucts.xml placed in the UserDataCache folder wasn't brought into the user folder and applied.

Link RVT Files
Improved stability when editing a dimension witness line that refers to a linked element.

MEP Analytical Systems
Fixed an issue that caused analytical spaces to incorrectly stay assigned to zone equipment when running a systems analysis after all are unassigned in the System Browser.
Fixed an issue that caused a systems analysis report to scroll to the top when the focus changed to a different view.

MEP Fabrication
Fixed an issue with changing size on parts that are connected to families which could result in poor stability.
Fixed an issue where toggling the connectors with severe slope angles would result in gaps from the connector to the dragging point.
Fixed an issue when placing an elbow on a rolled combo that could cause a main branch to unexpectedly move.

Materials
Fixed an API issue with setting the rotation angle of the material texture image.

Mechanical Settings
Fixed an issue that caused instability when deleting a line style that is used by the MEP Hidden Line setting.

Parameters
Removed the deprecation flag for BuiltInParameter/ForgeTypeId API mapping functions.
Updated the remarks for public API method Definition.GetDataType().
Fixed UnitUtils methods GetTypeCatalogForSpec(ForgeTypeId) and GetTypeCatalogStringForUnit(ForgeTypeId) to execute ArgumentException instead of InternalException for invalid inputs.
Fixed Definition.GetGroupTypeId() to return an empty ForgeTypeId instead of executing an exception when Definition.ParameterGroup is BuiltInParameterGroup.INVALID.
Updated the API documentation by clarifying "Other" group In LabelUtils.GetLabelForGroup(ForgeTypeId).

Phasing
Fixed an issue that a void extrusion created in a newer phase would show up in an older phase.

Properties Dialog
Improved stability when working with the type selector in editor mode.

Reinforcement
Fixed an issue where free form rebar is not visible in elevation views that are cutting through the set.
Fixed an issue where a uniform shape driven rebar set would disappear when the option to show it as solid was enabled.
Fixed an issue where a moved bar would not be visible in a section view, unless the original bar position was within the range of the section.
Fixed an issue where the Place Rebar tool, on the ribbon Modify tab, was not displayed during Edit Assembly.

Revit Cloud Model (workshared)
Fixed an issue where a cloud model would not open when there is not enough disk space.

Schedules
Fixed an issue where duplicate parameters could appear in a Note Block schedule, which if added to the scheduled fields, would cause stability issues.
Fixed an issue where the Split & Place schedule dialog may not respond.
Fixed an issue when copy/pasting a split schedule instance.

Security
Addressed potential security vulnerabilities related to the PDF Tron component. (More details)

Shared Coordinates
Improved stability when working with the Project Base Point and the Survey Point.
Fixed an issue when tagging angles that are smaller than 0.1 degrees.

Space Engineering Parameters
Fixed some dialog display issues with localized versions of Revit.

Steel Connections
Fixed the upgrade of models saved in older Revit models that contained labels created for sub-elements of steel connections.

Text
Resolved an issue with missing characters in tags containing right-to-left text such as Hebrew.
Fixed an issue where the cursor did not appear when editing text after Windows 10 Update 2004.

Units
Resolved incorrect symbol placement for Cost Per Area unit of measurement.

User Interface
Fixed an issue were switching the view with Ctrl+Tab may not work for some models.
Improved stability when working with warnings and errors.
Improved stability when working with Revit view windows.