I've been using Garmin coach for a while and a problem has shown up after a recent update. When it reaches the end of a lap, at times you need to press the lap button to move forward. For example, on Hill Repeats it may wait for you to press the lap button when at the bottom of the hill and ready to ascend.
Occasionally, it will not advance the screen. My watch will buzz as usual to indicate it has moved on to the next phase of the training program, but the screen will stay the same. Repeated presses give me more buzzes, but the screen won't change. However, if I stop the run and restart it, it will change the screen to the next lap. If I got impatient and pressed the lap button several times trying to get it to advance it will jump to the lap that corresponds to the amount of lap presses. By then I may have skipped a large part of the program.
I'm happy to provide logs next time this happens, please just point me to a howto to exctract the logs.