Fix GraphTrack arrow boxes being too height (#4424)
Fix GraphTrack arrow boxes being too height (#4424)

In this PR we are fixing arrow boxes in GraphTrack. After investigating,
seems to be that before we were calculating the height of the text
manually (because GetStringHeight() didn't count multi-lines).

Since now GetStringHeight() is returning the correct height, the visible
height was the square, and then the box was incredible big.

New Screenshot: http://screenshot/4B4n4ZggDKau4Ga
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