I've just noticed that on the 'Date' column of the post list page, both draft and private entries have 'Last Modified' notes, however the time/date shown above the notes aren't the exact time of my last modification, more likely they are dates of when the posts are created.
For example, if now I have modified a post which was created 2 days ago, on the post list page at the row of this post it still says:
So I'm confused, what is this 'Last Modified' meaning?
[moderated--bump removed. Please refrain from bumping as per Forum Rules]