similarly for me, MiniMax is kind of horrible that it somewhat regularly fall into loops that I had to save it from. DeepSeek & MiMO rarely got stuck. wonder how you get completely reversed experience.
I did develop my own agent around MiniMax. I did see weird behavior when I messed up the loop, like omitting pieces of remove thinking; maybe it's an agent bug, some models/providers just ignore/normalize the broken input, some don't.