Issue
Tasks in activities are showing out of order.
For example: A,B,C,D,F,G
Correct Order: A,B,C,D,E,F,G
Resolution
The resolution for this is to go to the process > Edit the process from the edit tab > Find the missing activity which is displayed underneath the previous activity and just click at the bottom of the shown activity. This will then reveal the missing activity which can then be edited.