Wrong count of replies (total vs. per page)

[janbrasna]

Describe the bug
Threads spanning multiple pages do not show the total number of replies in "All Replies" heading. Only the number on that particular page.

Preconditions
Visit a thread that paginates.

Steps to reproduce

1. Go to https://support.mozilla.org/en-US/questions/1583872
2. See "All Replies (20)"
3. Click to page 2
4. See "All Replies (8)"

Expected behavior
"All Replies (28)" on all pages.

Actual behavior
Every page counts only the number of replies shown on that one single page.

Screenshots/Screencasts

 

Additional context
Can't tell if that is the intended behavior, but leads to errors esp. if page 2 starts with just one reply and showing All Replies (1) making it appear it's the only answer and no other interaction happened before it.