I’m not sure. I’ll have to ask my mom – she’s an expert on correct english.
In any case, it’s certainly not the normal way to phrase a question. Certainly not this type of question. Maybe if I had previously written that I thought there was zero problem with the case in question, it would make sense to throw it back at me and ask rhetorically, “There’s zero problem…?”
But under the circumstances it’s a strange way to phrase the question. It would have made much more sense to write, “is there any problem with …..” “If not, then…”
On second thought, I’m not asking my mother. I don’t want to tell her about the CR. Let’s ask Haifagirl instead.