There's still a lot of jankiness in general in the combat system in general. I'll test to see if I can reproduce the bug and fix it before next release.I discovered this game a few days ago, and have found it intriguing but rather frustrating at times.
Once I'd learned a couple of offensive spells (archery and mana blast) I headed to the field round the back of the academy to try them out. At the entrance I encountered 2 wolf cubs, who attacked me and reduced my HP from 10 to 6. I tried to attack them, and every time I used a spell I got a noise and my MP reduced, so I think I was using the spells correctly. But though I kept on and on attacking the cubs, I couldn't kill them. It wasn't possible to stop fighting and retreat, and the cubs didn't attack again so my HP stayed at 6. Eventually I had to call up the menu and exit the game to get out of the situation. Am I missing something obvious? Do I need to designate a cub as the target of the spell in some way? Clicking on one didn't seem to do anything.
I replaced rpgmakers base with a collision based system, which mostly works but sometimes fails in strange ways (like magic archery fizzling out when clipping a tiny section of a wall)
Try attacking from different areas, luring them out of grass (some grass has coliders for reasons I can't figure out and I am not sure if it's all been fixed yet)
The combat system itself also has some jankiness. If everything stopped moving its possible something disabled combat mode, which should be fixable by leaving and re entering the area.