Jump to Known issues and workarounds.

Fixed issues

MAXX:Animation
Fixed a crash in a CAT Parent object when pressing the time warp button. MAXX-57295
Fixed the buttons to open Curve Editors for a CAT Layer displaying empty curve editors (no keys or curves). MAXX-57284
Playback performance degradation has been fixed when TrackView is open. MAXX-48640

MAXX:Cloud
SvfExporter no longer exports the wrong normal values for vertices in Shared View. MAXX-57925
The PBR material (Spec/Gloss) now generates standard material when exporting to SVF format. MAXX-57851

MAXX:Interop
Mirrored or copied linked models are now imported through direct Revit import or Link Revit import. MAXX-57610

MAXX:Modeling
Corrected an issue where 3ds Max could crash when you tried to remove a vertex where each surrounding face was triangular on a model with specified normals. MAXX-58681
Chamfer amount will now correctly reset to its default value when you right-click on its spinners. MAXX-57689
Meshes that have negative vertex integer values and have unallocated map channel vertices will no longer crash the IMeshValidator. MAXX-57667
The Mesh commands of RemoveDegenerateFaces() and Mesh::RemoveIllegalFaces() have been updated to support multiple threads, enabling these actions to be performed much quicker on more dense data sets. MAXX-57665
After using the Cut tool, the dotted preview line denoting where your cut operation will take place is now properly removed from the viewport. MAXX-57359
We now perform enhanced explicit comparisons between the cached mesh and input mesh passed to determine if topology changes to faces or verticies should invalidate Unwrap UVW data above the stack. MAXX-56960
Spline Influence helpers will now be visible in the viewport if created through MAXScript. MAXX-56225
Fixed an error where you were not able to undo some spline operations through MAXScript. MAXX-52577

MAXX:Python
The exception triggered when using 'quitMax()' from the pymxs module to quit 3ds Max is now properly handled by the Python wrapper and the script execution is aborded to shutdown 3ds Max. MAXX-57459

MAXX:RealTimeWorkflows
Baking Metalness or Roughness maps with Arnold only considers map inputs, ignoring parameter values. MAXX-58195
Stability issue when using Bake to Texture when the Slate Material Editor is open was fixed. MAXX-58163
Performing multi-editing of the material output in Bake to Texture no longer leads to unwanted instanced material creation. MAXX-58108
Bake to Texture dialog now displays the Arnold_map_override Map Options when switching focus from another dialog. MAXX-57820
Canceling a texture baking process in Bake to Texture can sometimes save a partial bitmap to output path. MAXX-57119
Background Color is not used when baking with projections. MAXX-56982
Global Super Sampling settings are not taken into account when baking with a Physical Material or without a material assigned using Scanline renderer. MAXX-56762

MAXX:Rendering
Fixed support to UV channels over 32. MAXX-57439
Editing a PNG file outside of 3ds Max will no longer crash 3ds Max if the PNG is being used in a scene. If the PNG is very large, the texture may disappear from the viewport. If this happens, it needs to be manually reloaded using the Reload button in the Bitmap map. MAXX-56799
Improved zoom extents behavior for perspective viewports. MAXX-56742
Enabled the option to change instantly the value of Motion Capture Float Controller>MIDI Trigger: Note input>Speed parameter, on the arrival of a new MIDI note. MAXX-54921
Loading scenes with many deep OSL shading trees is no longer very slow. MAXX-53240
A warning is displayed when collecting materials from the scene in Slate Material Editor; the default number of materials in the scene that triggers the warning is 10. You can change the default number using the "Warn on Get All Scene Materials" flag in the SME.ini file, or set it to 0 to restore the legacy behavior. MAXX-47844

MAXX:Viewports
Files from older versions of 3ds Max will no longer have viewports set as User Defined. Note: There are still issues with files containing multiple viewport tabs. In this case, only the tab that was opened when saved will be correct. The others will still be set to User Defined. MAXX-56435
Files from 2021 used as templates will now have all their viewports set to Standard in all viewport tabs. However, templates from older versions of 3ds Max will still have unselected tabs with viewports set to User Defined. MAXX-56434
Saving and reopening scenes with multiple viewport tabs will now have all viewports set to Standard as expected. MAXX-56433

Known issues and workarounds

MAXX:Modeling
Issue: When using a "mulit" preview selection type, selection priority is given to select a vertex first, if one is not found then the next highest priority is an edge, and lastly a face MAXX-58519
Issue: If a vertex, edge, or face point overlaps with another when working with edit poly/editable poly, only the closest point will be picked when you click on it. You will not be able to cycle through the overlapping points by clicking in the same spot, as you normally would. Workaround: Rotate the view and click on the desired point. MAXX-58907

MAXX: Rendering
Issue: Incorrect framing when rendering with ActiveShade in the viewport when Safe Frame is enabled and if the image ratio is narrower than the viewport view. Workaround: Disable Safe Frame when rendering with ActiveShade in the viewport. MAXX-57620
Issue: Resizing the viewport when rendering with ActiveShade in the viewport stops the render. MAXX-58888