I believe its an UI bug because Monster names and HP are not showing either. This has been an ongoing issue for 3 days for me. I have asked other people in game whether they are having any issue like me and I haven't had anyone say they do (they all kind of act like I'm stupid and ask me if I have the potions in the pet tab, or if I lowered my HP/MP alert threshold). Things I have tried: restarting my computer, Reinstalling the client, putting away my pet and reassigning the potions, using different kinds of potions, changing the HP/MP alert, Changing the Monster Alert setting. I don't know what else to check in game so I'm posting here hoping for feedback, thanks.
Thanks Charlie but I have restarted my pc twice I am reinstalling again now. Edit* Reinstalling didn't work.