Why don’t you upload without pre-loder first? or it by default OFF.
If posts are not loading just for your theme something must be there for sure. Reviewer uses same data to test all themes, no specifically crafted data to get your theme soft rejected 
Anyways thanks for info in your last thread about soft reject reason to upload latest TGM. I was about to upload a theme for review.
May be by the time you were witting a question with a but obvious answer I updated my file 
It needs to do frequently through out the life of a theme.