hairpin problem?

[info]

Hello-

I am forcing accidentals in a modal piece.  Time signature is 21/8 so the measures are long.

I wanted to do a multi-measure hairpin (decrescendo) but the hairpin stopped at the end of the first measure at the forced accidental (!).

1] is there a way around this?

2] is this a bug or really the way it's supposed to work or

3] is the reason it stopped there different from my assumption.

Thanks

Jay