Take a look at the vote counter
This is the migrated Question in the list view:
This is the same Question in detail view:
The votes counter is cached, so its possible that you see an older value in the lists, and the actual values only on the individual question pages. For new questions (less than 10 minutes old) the cache time is 30 seconds, for older questions it's 5 minutes.
I can't reproduce this.
Looks fine here:
and here (currently on page 2 at 50 per page)
So, as Jan stated -- probably caching.