Gtk::Label::set_alignment() broken?

[3rdShift <3rdshift comcast net>]

Hi,

I have an old application that hasn't changed in a year or two. Same
code has been working for a while. However, recently, after an upgrade
to FC10 with gtkmm24-2.14.3-1.fc10, the
Gtk::Label::set_alignment(JUSTIFY_CENTER, JUSTIFY_CENTER) would not
center text string on a label. 

To verify, I went back, rebuilt and tested the code in question with
older versions of gtkmm24 to confirm that it worked before as expected.

Has anyone notice similar discrepancy with 2.14.3?

thanks,
--Vlad