Daily suggestions workouts broke up after playing with setting. It happens while changing the goal from pace to heart rate. From this time, the SW doesn't show after starting an activity (only blink for few milliseconds) and the setting of SW is not possible because of graphical bug. You can see that in video.
The restart helped for some while (maybe days) and today I got same problem. After restart, it´s OK again.
https://photos.app.goo.gl/ajovc7Jtoqs7T5kF8
