I got this as well last night. Went by too fast to screenshot it, but it was mithril bars instead of copper.

There's another thread about this actually here too - https://www.lorwolf.com/Forum/View?id=5320

It seems like the encounter is taking vastly different bars all together.

I not have chaosium bar.

Still happening, and I want to add on that this devastated my several weeks worth of bar reserves because I did the encounter multiple times and had no reason to believe it was taking over 100 bars from me. I'm more than a little salty.

I didn't screenshot it, but I will next time I see it - I just started getting the Rockbreaker Ox in the campaign and it always seems to say that it requires Silver Bars. I offered bars, and it told me I didn't have enough Mithril Bars. I HAD Mithril this morning - and now I do not (and I did not use it for anything in the meantime), meaning that this encounter took my Mithril during the earlier encounters and not Silver as it says.

I would really like my Mithril back… I was going to craft with it, but now it's all gone and I can't even do this encounter successfully now. I'm definitely ignoring this encounter until this gets fixed. I'm very salty about losing my Mithril that I've been saving up for crafting :/

This looks to be fixed, at least for the Ox! Text is accurate now... can't check the bird though, not high enough level in fishing lol

I got the same thing as Stellori, but all it said it afterwards is my generosity did not go unnoticed. Is it supposed to give you something or what? It just took all the bars and that's it?