Incorrect placement of Fine, D.C. and voltas
Currently, if D.C. (or Fine) is used in the same measure as a volta, the volta will appear above the D.C., as shown:
Ideally, the D.C. should appear above in order to keep the voltas in line with each other. Currently the only way to do this is to go to Properties > uncheck Auto-place > Appearance > manually change offset.
It would also be nice if there was an option to move Fine and D.C. below the staff, which I believe is the norm for some publishers:
For example, the Breitkopf & Härtel version of Beethoven's WoO 10 Minuets has D.C. below the staff: https://imslp.org/wiki/Special:ImagefromIndex/58214/hfpn
Comments
I created an issue for the main point here: https://github.com/musescore/MuseScore/issues/15746
More configuration for how these markings are placed, for example to have them below the instrument/system as you illustrate, will come as part of system markings work ongoing for 4.x.