window bug or something on 6.31 and 6.21

Code:

alias window1 {
  window -aCdBk0l +L @window1 -1 -1 400 100
  aline -r @window1 Thiswordisveryveryverylong $chr(9) $chr(9) This not working
  aline -r @window1 Thiswordisveryveryverylong $str($chr(9),2) This work
}

The text is cutted on the first line, but not the second. And the first line is working good on the version 6.16.

Sorry for bad english.

You have character 32 in the first line but not in the second.

Ah, thanks, i tought is was a bug