Return to initial format when press BackSpace

Hi,

I noticed that TLF behavior is not very convinient for MS Word and other text processor users. The problem is following.

When TextFlow is empty and I change any format parameter (let's say change fontSize to 48) and then type some text - everything is OK. Text size is indeed 48. Then I press BackSpace button until I reach the position (0,0). If I try to type any text again then it's size is default - 12. I guess it should be 48...

Is this a bug or a feature?... Maybe I have to set any specific option to EditManager to make it MSWord-like?

Thanks,

Alexander