Percent done not well reported in the live monitor when several backups are running

Hi Benjamin,

hope you are fine.

Don't know if you are aware of it but when you run several backups and look at them in the live monitor, only one of them reports the done percentage correctly. Others seem stalled at 0% even if other statistics (files, softlink...) are reported correctly.

I'll take a look at it as soon as possible to get a better idea of what is going on.

Version used: fresh checkout of master.

Regards, Raphaël