High CPU usage likely caused by continuous UI refresh

After running in the background for an hour or more, SourceTree sporadically consumes high amounts of CPU.

The checkbox 'Push changes immediately' within the commit section flashes indicating the UI is being continually refreshed.

I have tried disabling the settings `Refresh automatically when files change` & `Refresh when application is not in focus` but the bug still occurs. It also happens on a colleagues machine with the same environment.