> They blend into each other. For example, the combined
> circumflex and tilde above (U+1ED7), the combined breve
> and tilde above (U+1EB5), the combined circumflex and
> acute above (U+1EA5), and the combined circumflex and
> hook above (U+1ED5).
Have looser combined diacritics for lowercase.
> They are too close to the vowel: e.g. the hook above (e.g. 0x1ECF)
> blends into the vowel beneath.
>They are off-centre, e.g. the dot underneath the vowel (e.g.
> 0x1EA1) does not appear to be exactly aligned with the vertical axis
> of the glyph. It should be precisely centred. It appears to be
> slightly to the left of that position.
Do you still experience this issue with newer soft ?
Please check the status of your issue.