There is nothing in the world termed as Ideal or perfect. Everything that exists whether it is a smartphone or your work efficiency or even humans cannot be perfect. Similarly, there are no CMS available till now which has no issues or Errors present in them. No matter how big their market share is and how popular it is.
We can only reduce or eliminate the bugs from time to time. Similarly in WordPress, to remove errors or bugs you need to enable WordPress Debug to get bugs to report if there is any. …