Steps to reproduce: 1. Attempt to add merged clip to timeline
Result: spinning beachball, finally giving up and force quitting. (I've waited several minutes to see if things eventually resolve...after about 5 minutes I gave up.) Expected: regular clips act as expected.
System info Application: Premiere Pro (Beta) v18.104.22.168 OS: macOS v12.3.1, RAM: 96.00 GB GB, CPUs (logical): 20