I have a problem with a view

https://creator.zoho.com/ecgnet/ecg-work-programs/#View:Sector_Thematic_Evaluations

I am displaying items by group (specifically, Sector/Thematic Subclass as designated in my database). I am not sorting the items by any other means. As you can see, some items that should be under one subclass (in the screenshot, it is Climate Change) are listed apart. Another group, Climate Change, Social Development, cuts into the list. Am I doing something wrong or is this a bug? 

Thank you in advance for your help!