https://bugs.winehq.org/show_bug.cgi?id=57076
--- Comment #1 from Esme Povirk madewokherd@gmail.com --- Seems like the application calls GdipMeasureCharacterRanges with its font to measure "\f0dd" (a private-use character) and has expectations about the size. Without substitution it gets 13x52. With substitution it uses Droid Sans Fallback and gets 64x84.
A size of 0x0 is accepted, so I guess it doesn't like the character to be "too big"?