cubicweb-vcreview #2741961 unstability confuse vcreview [done]

priorityimportant
typebug
done in1.0.2
load0.500
load left0.000
closed by#c8f7adfdb9c3 [hook] better detection of dead tip (closes #2741961)
patch[hook] better detection of dead tip #2741961 [applied]