Regardless of how long my Mac has been running, clicking on the Messages app causes it to bounce repeatedly. Eventually, it stops and behaves as if it has opened, but sometimes it doesn’t open at all. When it does open, the messages either don’t sync or take several hours to load. Most of the time, the last synced messages are over a week old. Occasionally, I can only message certain people from my Mac. If I attempt to text someone from my Mac, it freezes completely, requiring me to force quit. Interestingly, I don’t encounter any issues between my iPhone 16 Pro Max and iPad Pro. Both my iPhone and iPad are running the latest macOS betas.