I also lost gems. Yesterday morning I lost 300 gems from my inventory. All I was doing was training. I know that one can spend gems by not paying close attention to the on-screen messages. But EXACTLY 300 gems? Come on...

I'm also tired of other things disappearing from my inventory. For example, I've lost two map pieces that just disappeared before the day was out.

Another buggy thing is that Auto-Fight too often doesn't work. I have to click on Cerberus or Baal 2-4 times before the battle will engage. This wastes competetitive time.