BE2014 scheduling, running Jobs for one server simultaneously

Hi,

i have following Job config..

ServerA:

Backup 2 Disk SQL - 8:00 pm

Backup 2 Disk inc (log) - 8:00 pm

The problem is that the log backup never runs, only if i start it manually. Is it because they are scheduled at the same time? When i config the Job with 1 hour time difference both jobs run successfully.

Works as designed or problem?

Thanks and Regards