Count of "responses" does not match number of shown thread replies by John Mulhausen [MSFT]

At the top of the "Conversation Summary" column, the counts given for the number of thread responses isn't always born out by scrolling down into the column itself. This could be a side-bug of one I previously entered relating to duplicates being displayed -- as in the example cited here the summary count at the top of the column is correct and there are duplicate replies being rendered in the lower part of the column. But as the disconnect between the number of replies being shown and those being counted is a unique situation, I thought I'd log a seperate bug.