[Content] shaddah + other diacritic placement

[HamzaChioua]

When the shaddah is used in a letter , the other diacrititic sign must be above it (with exception of kasrah, which is always below the letter).

This is currently not the case (see screenshots)

[StefanoCecere]

thsi is quite complicate. the shaddah has a fixed height, while the diacritic is dynamic.
currently we can't say to the shaddah to stay below the top diacritic sign of a letter :(