Soft reject (WP theme)

Hi Everyone,
I have got soft reject for WP theme. I have received several issues and I decided all questions except one:

Page content loading issue:

I can’t understand - What wrong in page content loading?
There is front page with sticky post (and with other posts I think) and after that person want to see page “About The Tests”, but what is wrong?


The issue here can be easily seen on that video. The content is loading on the center of the page, then it goes to left, and only after this the sidebar appear on the page.

This is clearly a visual issue.

Solution: Make posts(content) and also the sidebar load on the same moment.

Thanks for quick answer. Now I see it! It was written “Page content loading issue” and I think that there is problem when page “About The Tests” loading.
Now I am understanding.