Use this document to see the list of bug fixes in After Effects CC 2017.0.2 (January 2017) release.
Issue Status
When you try to open the Preferences dialog, After Effects crashes. Fixed
When you play back footage in the timeline with either Preview or spacebar, the footage plays in a loop with a spinning beachball. The issue was reported on computers running macOS 10.12.1 (Sierra) with 4K and 5K displays.
When you import a JPEG sequence after changing its frame rate from the default frame rate in the Interpret Footage dialog box and save the file, After Effects changes the frame rate of the sequence back to the default value. Fixed
When you send an After Effects composition to Premiere Pro or from Premiere Pro to After Effects via Dynamic Link, the composition appears in lower resolution. For example, if you send a 1920 x 1080 composition to Premiere Pro, Premiere Pro displays it in 960 x 540 resolution. Fixed