I fixed the text wrap issue by clicking "Forum Actions" at the top of the page, selecting "General Settings" and then towards the bottom, changing the Message Editor Interface from "Enhanced Interface - Full WYSIWYG Editing" to "Standard Editor - Extra formatting controls".
I posted the fix in the "Forum suggestions & user assistance" forum, and several reported that it worked for them. One guy running Firefox said the fix did not work for him. I am running IE8. Good luck.