Some things just come up unexpectedly in large projects. You can never exclude that 100%. I don't understand why this should "persist" now. I haven't read about perfect construction yet.
That one doesn't exist either - but it is noticeable that you quite spontaneously asked about things again and again, which one could normally have planned beforehand.
That has little to do with unforeseen things
But if it really bothers you that much, one can think about the wrapping. I would just wait for about half a year to see if it really bothers that much...