I can... :-)
Try this:
1) select the table (simple click)
2) right click and choose properties
3) go to the "table" tag (second tab) and change the width to "200" px (or some other value)
4) click "ok"... nothing happens; if I switch to html view there are no changes.
I'm using IE7 (lastest updates), with FF2 it doesn't work at all...
Now, if I just drag the table to resize it then it's working fine (ie. it's changing the width style property). At least in this version while in html mode it doesn't insert two lines when pressing enter, and the tab key actually works -- yay...