By any chance did you have a special attack put on you that looked kinda like slime or something? Cause that may be due to an attack that attacks over time. Should've that of that!
Viewing post in SlimeTopia Halloween jam comments
Just figured it the issue out! It will be patched in the new update :D
Basically when the fighter "dies" it does something called a revival jump which is symbolism for the corruption being taken off of the slime. So the active attack comboed with the revival jump basically fights each other so they can never reach each others target.