My electrical panel has a double-pole breaker that looks like it's for a MWBC, but actually the attached wires are from different cables. In the below picture the black wire with the yellow rubber bands goes out the side of the panel (to a sump pump). The red and black wires with blue rubber bands are from the same cable going out the top and to the kitchen. (The dishwasher is on the red wire; as far as I can tell nothing is on the black wire and it's probably a provision for a garbage disposal, but I haven't moved the dishwasher to get to the outlet and verify it's a split.)
How bad is this? I understand that one would have to be extra careful about turning off breakers to the kitchen to not leave half the circuit live, and I can't turn off just the dishwasher or just the sump pump, but is there any other danger here? I guess if the dishwasher trips the breaker it will take out the sump pump, but I feel like I'd notice that before my basement would flood.
My current thought is "some day I'll have an electrician out for something else and I'll ask him to look at this too." Should it be a higher priority?