Inspector shows wrong values for sizes assumed to be in spaces

Context: commit fea8e21 (yesterday)

Steps:
1) Open any score
2) Select, say, an accidental
3) Open the Inspector
4) Set the X or Y offset to, for instance, 1sp

Result: The element moves not by 1 sp but by much less. Apparently 1 'real' sp is shown as 5.79sp in the Inspector and viceversa, a value of 5.79sp in the Inspector is needed to have 1sp in the score.

Are values in the Inspector in raster units rather than spaces?

Thanks,

M.