IF on side(or end?) of paragraph is TOF/EOF then the whole file is selected too.
This is a bug. Would be fixed.
I have thought about this too as i have seen how you do select an
whole paragraph with Ctrl+Shift+] ... you select till pos1 of next paragraph.
This is like it is designed. To be, somehow, consistent in navigation when you select left or right without releasing Shift. The logic is same as you have when selecting words with Ctrl+Shift+Left/Right.
I have see your point (and agree that this is more handy when selecting single paragraph), but as far I remember my experience with word selection, it was only one way which works correctly in both directions.
I have the same understanding problems with count in status bar - it tells the selection
where incl. the next empty line (at least it is not taking this line into the counting)
The line count is count of line breaks came into selection. Generally do not know what is more useful here. Adding +1 is not a problem.
About selection left limit is inclusive and right is exclusive. So better to show maybe something like this:
[1,1] till (5,1).
And this also explains screenshots. Selections on pic 4,5 include LB, on pic 1,2,3 do not.