With Parisienne I almost always see the break. Some times (for example
at size=132 and 177) the break is not noticeable, but I think it is
because of the visualization that covers it in some sizes and
highlights it for others; but the break is always there...

Bummer, I will do some more experimentation -- maybe it has to be evenly divisible by 4 instead of 2 (which 132 is but not 177. I just can not understand why I do not see all of the breakage that you do.