I usually don't like calling out such things, and I choose to take it in stride and move on, but, this got on my nerves today.
Last night, I initiated the training of 6 tactics overnight (3 betrayals, 2 sabotages, and 1 protect), so that they would be ready for my war attack in the morning.
I woke up early in the morning, and noticed only 5 tactics trained (2 betrayals, 2 sabotages, and 1 protect) and they were present in the tray at the bottom, and it showed 5/6 tactics at the war academy.
I wasn't too bothered, and initiated training of 1 more betrayal.
After an hour, I logged in, and it showed 3/6 tactics only - just 3 betrayals.
2 sabotages and 1 protect which showed up on the tray an hour earlier went missing!
I had to get a tactics blessing immediately, and I started training 2 sabotages and 1 protect again - otherwise, I wouldn't have been able to make my war attack before leaving home for work for the day.
I've calmed down now, but, this was quite outrageous.
I would really appreciate a fix for tactics going missing. It can make a difference between getting in the war attacks in time, versus missing them, due to their long training time.