changing lyrics text styles's vertical alignment does not affect lyrics dash and melisma underscore
Came up in https://musescore.org/de/node/177731, including sample score
Changing lyrics text style from bottom align to center align moves the lyrics down, but leaves the lyrics dashes up. Same for Melisma underscore.
Actually only one of the four alignment options works properly.
Might be yet another reason to use the font's dash instead, see #21239: Style of dash doesn't follow lyrics style, that won't solve the problem with melisma underscore though