On a standard 80-column window, 'dir /2z' with TCC / TCC/LE 10.0.76 (i.e. the latest version) produces 82 columns of output. For example (with some character substitutions made because the editor is trying to parse them as control data):
Widening the window to 82 columns avoids the problem. It looks like there are double spaces being inserted in many columns, if these were single-spaced (a) the output wouldn't overflow any more and (b) there'd be room to display a little more of the file name for longer filenames.
[C:\WINDOWS\Fonts]dir /2z . [dir] 20/06/09 18:35 .. [dir] 20/06/09 18:3 5 ARBLI___.TTF 65544 24/10/97 14:42 arial.ttf 367112 17/07/04 10:3 9 ...