Wikimedia Bugzilla is closed!

In sortable initially collapsed tables with two header rows, the second header row is not displayed when expanding the table:

{| class="wikitable sortable mw-collapsible mw-collapsed" 
! colspan = 3 | sortable collapsible collapsed
|-
! sortable header 1 !! sortable header 2 !! sortable header 3
|-
| 1 || C || Y
|-
| 2 || B || Z
|-
| 3 || A || X
|}


Sortable initially expanded tables works as expected. Collapsing and expanding the template shows all rows:

{| class="wikitable sortable mw-collapsible" 
! colspan = 3 | sortable collapsible uncollapsed 
|-
! sortable header 1 !! sortable header 2 !! sortable header 3
|-
| 1 || C || Y
|-
| 2 || B || Z
|-
| 3 || A || X
|}


Initially collapsed tables that are not sortable also works. Showing all rows when expanding:

{| class="wikitable mw-collapsible mw-collapsed" 
! colspan = 3 | collapsible collapsed
|-
! normal header 1 !! normal header 2 !! normal header 3
|-
| 1 || C || Y
|-
| 2 || B || Z
|-
| 3 || A || X
|}