Thanks for the video, I could clearly see the error you described. I've been working on this plugin for a couple of days to release a full update, and I took the opportunity to release the fix for your error, but it involves a change in the enemy event settings.
In the new version 11, the tag for configuring enemies is in the comments and not in the notetags, and the command to start the battle has the option to control escape and self-switch activation, so when you defeat an enemy it disappears completely. Both the help for the new version and the devlog I just released have details on how the new mechanics work, of course, there are other new features, such as custom sprites for enemy actions and a particle system. I hope you enjoy it!