That's the way Poketext works.
To fix things up, use a hex editor and you're good to go.
Sometimes Poketext tends to act inaccurately though. So if you save some text and it has problems storing the data in the rom, gives error messages and the text box where you wrote the text looks "weird", don't click Save to store the data in the rom. For me, it has sometimes stored this text data in another part of the rom.
If this happens, just copy the text data to "keyboard's memory", open the rom with Poketext again, and paste the text there. Then, see if the text compiles "the way it should".