Weird behaviour desktop vs. online

Hi

I have experienced a weird phenomenon. 

I have an employee table and a table with working hours per day.

I have a calculated column which is matching the "actual daily hours" and the "hours guaranteed" per employee.

In my desktop version this is working fine. 

I have published it on powerbi.com and set up automatic updates and the update is running without problems.

However, when the automatic update is done the "hours guarateed" has ten doubled??

Online after automatic updateDesktop after update

Has anyone experienced something like that before?