WorkingHours version: 2.9.0
OS + version: MacOS 12.4 (Monterey)
Timer stops on its own at 1h 40m. This has happened multiple times. Steps to reproduce: Start a task timer by clicking on the WorkingHours icon in the menu bar. The timer will run up until 1 hour and 40 minutes have elapsed, then the timer will stop, and the app will open.