Just an update: In Gutsy, this error is fixed. In firefox in Feisty, Pango was enabled by default (or maybe disabled by default?). Regardless, the default setting for Pango was switched in Gutsy and now the vowels display correctly.
Just an update: In Gutsy, this error is fixed. In firefox in Feisty, Pango was enabled by default (or maybe disabled by default?). Regardless, the default setting for Pango was switched in Gutsy and now the vowels display correctly.