Since last night, I've been trying to do level five or six of my battle quests. My pet is plenty able to handle that level, and there's never been a problem. It's suddenly not taking any health from my opponent when I take my turn, though. Is anyone else experiencing this?

Is it still not working for you? I don't recall seeing any bug reports for it, so hoping it was fixed!

Battle quests are progressing well now, yes! :) There is another issue which I tried to post a note about in the bug forum. Two different tome types, I believe it's ice and wind, are acting like eggs when I try to 'use' them on my tier 9 pet. (Eggs can only be used up to a certain tier, but that has never been the case for tomes. It makes things kinda tough for me this way because my whole stat growth strategy revolves around tomes.)