I don't know since how long this bug is there but before this bug while attacking the opponent the attacker was not losing health due to degeneration.
For reference see Lagacy's video from 8:47 -
https://youtu.be/QWKgCwQQpm0Ghost is clearly not losing health while attacking.
Right now ghost is losing health while attacking which shouldn't happen. Check it here -
https://youtu.be/jZE04t_wOaY14% health per fight is pretty bad.
Kindly look into this. Thanks for reading.