Too much space between lyrics
In MuseScore 2, the minNoteDistance style setting (in Measures section of style dialog) also worked to force a minimum distance between lyric syllables. The default was 0.25p, which allowed for very tightly-spaced lyrics. In MuseScore 3, lyrics are part of the chordrest shape and hence that distance is still honored, but we also force a full 1sp (0.5sp on each side) of additional space between lyrics. This makes music with lyrics take up more space than necessary, sometimes by a pretty large margin.
Since the minNoteDistance is kind of non-negotiable here - with lyrics part of the shape, we really have no choice by to enforce that - I propose a new style parameter that would allow you to specify extra space (or potentially negative, to allow you to counteract the minNoteDistance and get your lyrics to touch).
Implementation is trivial, I could submit PR already, but wanted to open it up for discussion first. I could also simply remove that extra 1sp padding and be perfectly happy for my own use, but even in 2.x I long thought there should be a separate setting for minimum lyrics distance.