[CQ-Contest] repeating callsign - what the heck?

[Mike Smith VE9AA]

I've done the ARRL DX CW many times. (and do most of the majors;
CQWW,WPX,WAE,RDX many many times)
 
Is some institution in EU (or some popular EU logging software) instructing
EU's to call you with their callsign twice?
(or if I am running, they'll again put their callsign in their message when
they come back to me yet one more time?
 
I am hesitant to even complain (make note of is more like it) as they made
up 86.6% of my log this weekend (TU EU!!) but this weekend more than ever
before in my decades on the bands did I have (what seemed like) every 8th or
9th caller doing this at times(maybe more at times).  I ran anywhere from
34wpm to 40wpm (mostly 38wpm) this weekend and especially on the high bands
I was coming back to the loudest guy just as soon as they had sent their
callsign ONCE.  Occasionally when my rig was just going into TX, I'd catch
part of a CW character telling me they had sent their call again.  No
response (I doubled  with them)
 
Thank goodness for the "=" key in N1MMLogger+ (repeats last message sent)  I
about wore it out.
 
Thoughts?

VE9AA “NB”

Mike - Keswick Ridge, NB, Canada