Good evening!

There have been a number of reports where monsters will aggro pet owners once their pet disappears. After running a thorough investigation, we have determined that monster's hate would increase improperly towards pet owners. We have also confirmed that this issue occurs on all monsters and it is not restricted to any particular battle contents.

As a result of this issue, during battle, monsters will switch their target to the pet's owner, once the pet disappears.

This issue is scheduled to be addressed in the upcoming version update.
We apologize for any inconvenience this may be causing.