There is a wooden staircase going from the kitchen to the basement in our house. A small gap has opened up between one of the steppers (the part of the stair case you step on) and the stringer. In addition, there is a small amount of squeaking when you use it.
From a cosmetic point of view, I think it is fine. I looked at the bottom (e.g. underneath it) and it all looks fine. However, I am worried about a safety issue. Should I be?
Here is another picture: