cubicweb-conference #736300 problem with "same time" box [resolved]

on https://www.euroscipy.org/talk/875 one can see that the box "same time" says "using sympy etc" is at the same time when it is actually after.

prioritynormal
typebug
done in0.9.3
load0.200
load left0.000
closed by#f928f7fe4e98 [fix] same time box display (closes #736300), #52f690a40b73 [views] fix bug in same time box overlap (closes #736300)