An internal class - TextLine - used by TextLayout and TextMeasurer
is trying to compensate for italic overhang to the right that if
ignored might mean visually text did not fit into the space it
claimed it would occupy.
It only needs to pad the rightmost character in the line this way.
However if
PS
You could try compensating by that amount and see if it helps.
I guess I didn't really finish that thought.
I wouldn't compensate in exactly that way - if you did then it
would be ignorant of whether we fixed this API to return
the logical advance as opposed to the visual advance.
What you
