I personally don’t have a problem with these kind of irregularities, either, especially when they fall outside of the main design (as they mostly do)…they are the charm of the heavier silver imho, something I seldom have issue with.
To demonstrate my earlier statement, here is a Charles I type 4 crown with mm. R in brackets over P in brackets. Stress marks everywhere, but a rare mark, so forgiven to some extent. All (R) crowns are over (P) - see Coopers BNJ article.