This page lists known limitations in the Maya 2020 release, and any available workarounds.

Known issues on macOS Catalina
Due to the timing of the release of macOS Catalina and Maya 2020, there are a number of known limitations to be aware of:

• Maya requires Full Disk Access and Files and Folders permissions otherwise it will crash.
• In some cases the viewport will freeze and you will need to restart Maya.
• Movements of the mouse during playback can affect playback speed.
• If you are using multiple displays, Maya's performance can suffer.
• Pose selection in the Pose Editor is not maintained.
• The order of windows on the screen can be inconsistent with their usual expected ordering.
  
  Additional specific issues related to macOS Catalina are listed in the rest of this document.

Animation
Print does not work with expressions when cached playback is enabled While using Parallel EM, turn off Cached Playback MAYA-98828
Blend Shape painting with a weight of zero leaves some values at a very small non-zero value Use flood to set all weights to zero. MAYA-98027
Matrix Input : Breaking connection of offsetParentMatrix is not working Undo the creation of the connection and locator1 will move back to its original position. MAYA-96507

Foundation
macOS Catalina - Viewport stops updating after changing Workspaces On macOS 10.15 (Catalina), avoid reparenting or docking the viewport, the Graph Editor or the Node Editor. Use the classic Graph Editor to avoid this issue. If the viewport stops refreshing, restart Maya. MAYA-101450
macOS Catalina - Closing the Render View after rendering will crash Maya if Maya is not added to Full Disk Access To add Maya to Full Disk Access, do the following: Select macOS System Preference > Security and Privacy > Full Disk access > Maya. MAYA-100976
Maya will crash if the Maya Documents Folder is not added to macOS Files and Folders To add Maya to Files and Folders, do the following: Select macOS System Preferences > Security and Privacy > Files and Folders > Maya Documents Folder. MAYA-99769

Installer
Running a deployment using an xml manifest that contains a space in its path or filename will cause deployment to fail For more information regarding deployment, see Maya Installation and Licensing MAYA-101806
Maya installer sometimes fails on Windows if Visual C++ Redistributable 2017 x86 is already installed Uninstall Microsoft Visual C++ 2017 Redistributable (x86) and use the version provided with the Maya installation, or re-install a new version after Maya has been installed. MAYA-101368
There can be a delay of 15 seconds starting Maya when the "Start" button is clicked, at the end of macOS installation. MAYA-100537
Users should not be able to uninstall Maya 2020 when Maya 2020 is currently running Ensure that you exit Maya 2020 before uninstalling MAYA-100073
The installer's Uninstall or Modify options do not indicate that Maya is already installed. MAYA-98906
Maya 2020 cannot be installed on Linux systems with /tmp mounted with noexec Install Maya in two steps. After extracting the installation files and changing directory to the installation package, run sudo ODIS/AdODIS-installer.run --unattendedmodeui none --mode unattended --prefix /usr/local/Autodesk/AdODIS/V1. Once that completes, run sudo /usr/local/Autodesk/AdODIS/V1/Installer -i install -q silent -m setup.xml -x /usr/local/Autodesk/AdODIS/V1/SetupRes/manifest.xsd MAYA-101994

Legacy FX
If a kinematic/dynamic rigid body's bounding box overlaps with an object that is initially sleeping, that object will be awakened Move the kinematic/dynamic object further away so that the bounding boxes do not overlap. MAYA-52813

Modeling
The representation flag in the polyColorSet command no longer works when set to false Don't use representation=False, just: print cmds.polyColorSet(q=True, allColorSets=True) The representation parameter only accepts A(alpha only), RGB, and RGBA values. MAYA-90610

Rendering

aiStandardSurface appears darker than in previous releases in viewport textured mode In Maya 2020, diffuse lighting has been improved on the viewport representation of aiStandardSurface so that both aiStandardSurface and Maya Standard Surface shaders match their corresponding Arnold render results as closely as possible. In previous versions of Maya, the viewport representation of aiStandardSurface was not physically accurate and therefore appeared too bright. Its viewport representation in Maya 2020 is now physically accurate; as a result, aiStandardSurface may appear darker than in previous versions, and Standard Surface may appear darker than Lambert in textured mode (6 mode). MAYA-101512

UI
The UI does not scale with text on Windows systems with a mixed scale setup Workaround: Disable scaling via Windows settings > Display settings > Scale. MAYA-82375

Viewport

Viewport representation of area lights is different in Maya 2020 A new Normalize option has been added to area lights so that, when enabled, the Intensity attribute represents the total light emitted, regardless of the size of the light. This option is enabled by default, and therefore you may see a difference in the viewport representation of your scene or in your final render (if you are rendering using the Maya Software renderer or the Maya Hardware 2.0 renderer). To revert to the behavior in previous versions, disable this option in the area light Attribute Editor. MAYA-100834