BUG REPORT: preview playback will not stop
When playing preview by pressing the spacebar or using the preview panel it does not stop by pressing the spacebar again and the interface is unresponsive. (CC 20 - v17.0)
This is fixed in After Effects 17.0.1, released last night. Please update and let us know if you’re still seeing any issues.
Brittnell Anderson commented
I'm seeing this as well, with the only way to exit being to force-close After Effects via Windows Task Manager. My example video here: https://youtu.be/p5FXAPhdg5E ...and support community post here: https://community.adobe.com/t5/After-Effects/After-Effects-2020-Preview-locks-up-program/td-p/10723016