How to get ride of the '0h'

[robocop]

How do you remove and prevent ‘0h’ being added before and after effort in the Resource and Task Usage views? This seems to be throwing off my start dates. Seems the start date and finish dates at times are based off the ‘0h’ rather than the actual effort.

So my task or resource usage looks like this (0h 0h 0h 0h 0h 0h 0h 36 36 36 36 0h 0h 0h 0h)

I tried to highlight it and delete it but it shifts the effort and at time adds more 0h.