Multiline select with SHIFT+END wrong

System: SSMS: 11.0.3368.0, SQL Assistant: 6.3.171 Prof., for MS Management Studio: Environment Integration: Full

Steps to reproduce:

With cursor at the start of a line
use SHIFT+DOWN ARROW to select multiple lines.

SHIFT+END at this point should expand the selection to the end of the current line (line with cursor on it).

Instead, it moves the starting point of the selection to the end of the top line (decreasing the selected text).

Bug or it is only by me ?

I'm able to reproduce that too. is I press SHIFT+END twice, e.g.

SHIFT+DOWN ARROW -- selects 1st line
SHIFT+DOWN ARROW -- extends selection to the 2nd line
SHIFT+DOWN ARROW -- extends selection to the 3rd line
SHIFT+END -- extends selection to the end of the 3rd line
SHIFT+END -- removes selection from the 1st line and moves caret to the end of 1st line.

If I disable Smart Text Navigation option in the settings and restart the editor, I cannot reproduce the above behavior.
Note that Smart Text Navigation is mostly to ignore trailing spaces at the end of text lines.

PS. Try CTRL+ALT+H to select the current statement in one go, it's more efficient then selecting multiple lines line by line

yes, if I disable Smart Text Navigation option I cannot reproduce it too. Thank's for Tip.

P.S for comparison: In SSMS 2008 (R2) works selecting of multiple lines with Smart Text Navigation correctly.

This must be related to SQL Server 2012. I experience the same in an earlier version of SSMS (11.0.3128.0) as well.

Toad is also affected (though a bit differently). Starting from the end of a line and using Shift + Up to select a few lines and the pressing Home to select the uppermost line will unselect the lowest one instead. Disabling Smart Text Navigation cures this one too.

Thank you very much for all your input.