Text placement leads to stair steps
If you enter three (or more) tempo marks so they overlap, they form a stair step pattern like
it would be better if this
were the default behavior. In this picture I have only disabled Auto placement on the third tempo mark, but this is what it should look like any way.
Note: in a large score this is rare, but does happen. What is more commonly seen is in a part with a couple of sections between tempo changes having nothing but multi-measure rests and several tempo marks end in this stair step pattern.
I wrongly emphasized this issue with tempo text. It happens with other text types also, I first noticed it with tempo text.