Post titles with same names are disappearing

[Jose-Alfaro]

Hello, and thank you for this amazing theme!

I am currently working on a blog where I want to keep track of weekly progress across different categories which are divided via tabs. Therefore, each category tab will have the same number of posts with the same name. For instance:

Sleeping Trends   Exercise Trends ...
 Week 1                Week 1
 Week 2                Week 2
 Week 3                Week 3
 ...                   ...    

In this case "Sleeping Trends" and "Exercise Trends" are the tab names and Week1-3 are the post names. When I try to implement this, I find that the post names must be unique even across different tabs otherwise some will disappear. Meaning that even though I seem to be coding things correctly in the config.yaml file, I get the following output:

Sleeping Trends   Exercise Trends ...
Week 1               
Week 2               
Week 3               
...                          

Has anybody experienced this as well? If so, how can I fix this so that I can have the same post names across the different tabs?