In the holds awaiting pickup we can see how it should look like, but it doesn't work for the recalls awaiting pickup: the number of recalls that will show on each tab at the end of the tab label.

We can see that the variables are there in the template, but it doesn't work:

+                    [% WRAPPER tabs id= "results" %]
+                        [% WRAPPER tabs_nav %]
+                            [% WRAPPER tab_item tabname= "recallswaiting" bt_active= 1 %] <span>Recalls waiting: [% recalls.count | html %]</span> [% END %]
+                            [% WRAPPER tab_item tabname= "recallsover" %] <span>Recalls waiting over [% Koha.Preference('RecallsMaxPickUpDelay') | html %] days: [% over.count | html %]</span> [% END %]
+                        [% END # /WRAPPER tabs_nav %]