Text offset units
I have just installed Musescore 3 and wanted to rework my templates before switching to that version.
Unfortunately I found that I could not get the same results as in previous versions (text left aligned in a vertical box with more than 100 mm) due to limitations and a bug in offset units.
In "text style" and in the documentation, the unit is supposed to be (and shows as) spaces but in the navigator and output the unit remains millimeters. The field limitation givess a maximum offset of 100 mm instead of 150 mm (with a space unit fixed to 1.5 mm)