The glyph for U+1444 Canadian Syllabics PWA incorrectly has an extra dot on top, making it indistinguishable from U+1446 Canadian Syllabics PWAA, which should have the dot.
Thanks a lot for the bug report. This has been fixed in revision 2514, there will be a snapshot at http://dejavu.sourceforge.net/snapshots/ tomorrow (2013-03-18) if you want to test the font.
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