[mg85976] Word wrapping oddity/bug?

[AES <siegman at stanford.edu>]

[I'm starting to think my substantial personal hostility toward the 
Mathematica 6.0 "upgrade" is causing my installation to play hostile 
tricks on me, just to get back at me!]

*  Open Mathematica 6.0.1.0 on a MacBook running OS 10.4.11.

*  Open new NB using Cmd-N; drag window wider than initial setting.

*  Set Format >> Stylesheet menu command to Default 
   (only do this because I have a very slightly modified "myDefault" 
   stylesheet for my usual NBs, and I don't it to be involved).

*  Check that  Format >> Word Wrapping >> Wrap to Window Width
   menu command is checked.

*  Type Cmd-4 to make first line of input a "Section" header.

*  Type in some long string, obviously wider than page width (but
   not wide enough to wrap in window).

*  Hit, or don't hit, Enter key.

*  Use Format >> Word Wrapping menu command to change to
   Wrap to Page Width:

***  All text beyond page width disappears; cell height does not increase

*  Start another