Time is not correctly shown at the beginning of analysis ( windup-web )

When we run an analysis sometimes the time shown in the analysis table goes back and starts again.

It shows In Progress 4 sec , then In Progress 1 sec then In Progress 6 sec

Apparently it's related with this line :

</span>
<span *ngIf="!execution.timeCompleted && !execution.timeStarted">
currentTime - execution.timeQueued | wuDuration
</span>

The currentTime variable could be not updated and it gives a negative value but the method only shows absolute values.
That variable gets updated every 5 seconds by a timer, so it could be that the analysis starts and the variable still has its value from 4 seconds, therefore a negative result.