As well as support for macOS 10.13.2 and the iMac Pro, Avid has taken this opportunity to fix a raft of bugs in the Pro Tools 12.8.3 release. Here is the complete bug fix list...
UI Errors and Performance
Fixed several issues with sluggish scrolling in the Edit Window
It is no longer impossible to put Pro Tools windows into full-screen mode on macOS
Fixed an issue that caused the System Preferences window to appear blank in some cases when switching to System Preferences from Pro Tools
Improved performance of rapid zoom level changes using the "r" and "t" command focus shortcuts
Improved smoothness of continuous timeline scrolling and visible counters during playback
Improved the speed of showing and hiding tracks
Fixed an issue that could cause the cursor icon to reflect the wrong edit tool in some cases
Fixed an issue that could cause the Edit window to turn white
Fixed an issue that allowed Tracks to be dragged between playlists of a track in Playlists view
The correct multi-mono linking controls are now displayed in multi-mono plug-in window headers when such a plug-in is instantiated following a mono to stereo format converting plug-in
Fixed a UI issue that occurred in the Channel Strip plug-in when collapsing or expanding any of its processing tabs
Fixed a case where the Delay Compensation indicator in the edit window failed to update after turning off Delay Compensation in the options menu
Video
Corrected the video sync offset for all non 29.97 based frame rates when using video hardware
The video window no longer stays on top when toggling between applications on Mac OS
Fixed a window ordering inconsistency when placing other floating windows on top of the video window on Mac OS
Sending the wrong reference rate to video hardware will no longer put the video engine into a bad state
The "Play Start Latency" Preference is now saved with the system, instead of the session
Importing two videos that are copies of each other will now play
Fixed an issue where MXF's generated from 3rd parties would display a black video window and no thumbnails
Existing files are now shown in the Bounce to Disk destination folder on Windows OS's
Automation
Fixed an issue that caused steep pan automation to play back incorrectly on tick-based tracks
Fixed an issue that caused automation to be recorded incorrectly on VCAs that were controlled by other VCAs
Fixed a crash that could occur while writing VCA automation in large sessions
Fixed an issue that could cause switching auto-height automation modes for 7.1.2 and Atmos Object panning to fail to add height to the signal
Workspace and Relinking
Tags input predictive search and typing to add Tags to audio files is no longer broken
Fixed some cases when upon session open, Pro Tools could link to the wrong file audio file based only on its name and path
Fixed an issue with manual relinking where files with duplicate names but differing metadata could appear identically in the "Select Files to Relink" pane of the Relink dialog
Improved launch time for Pro Tools when the workspace database file is extremely large
MIDI
Fixed an issue where cutting or deleting a MIDI clip in clips or blocks view may leave notes behind
SysEx events are no longer missing from the MIDI Event List
Fixed an issue where notes in MIDI clips created using the Separate on Grid command may not copy and paste, duplicate, or repeat correctly when edited
Using the "=" key on the numeric keypad for shortcuts to open the MIDI Editor, Score Editor, and MIDI Event list no longer fails
Plug-ins and AudioSuite
AudioSuite processing of clips no longer unexpectedly changes the clip color and mute status
Fixed an issue where a "No Audio was Selected" error may occur unexpectedly when clicking in the timeline while previewing AudioSuite changes
The Gain and Normalize AudioSuite plug-in windows now support plug-in settings presets
Fixed an issue where the Time Adjuster plug-in did not correctly delay compensate for its offset value
Miscellaneous
Fixed an issue where the Quantize to Grid command did not apply on the first execution of the command
Fixed an issue in sessions with more than 26 groups that could cause groups to lose their color if tracks were deleted
Low Latency Monitoring no longer fails to work on surround format inputs
Fixed an issue where exporting to Interplay and setting the Media Destination to Same as Source could export files to the incorrect workspace
Fixed a crash that was frequently submitted to the crash log server that could occur when closing sessions
Fixed a crash when expanding matched Field Recorder Channels to new tracks when the Field Recorder Guide Track has a send with Follow Main Pan turned on
Fixed a crash that could occur when auditioning a playlist in playlist view if it contained a multi-channel clip made up of combined mono clips of different lengths
Fixed a crash that could occur after importing multiple clip groups
Silent installation of Pro Tools on macOS no longer fails to generate all directories and files needed