cubicweb-timesheet #1725445 calendar icon is not always displayed [deprecated]

I get the text version of the calendar icon (in the leftmost column) when I browse to Logilab's intranet "activity" instance:

  • the /activites/ page is displayed correctly
  • all other pages, e.g. /activites/resource/alf have the text version
prioritynormal
typebug
done in<not specified>
load0.000
load left0.000
closed by<not specified>