To be more specific, here's the output from TTX when the font is recompiled - it seems to indicate that the problem lies in overly large GPOS (glyph positioning) lookup tables:
Attempting to fix OTLOffsetOverflowError ('GPOS', 'LookupIndex:', 7, 'SubTableIndex:', None, 'ItemName:', None, 'ItemIndex:', None) Attempting to fix OTLOffsetOverflowError ('GPOS', 'LookupIndex:', 8, 'SubTableIndex:', None, 'ItemName:', None, 'ItemIndex:', None)
Recompiling the font reorganizes this table so that it no longer causes an overflow; that was enough to fix the issue for me.
To be more specific, here's the output from TTX when the font is recompiled - it seems to indicate that the problem lies in overly large GPOS (glyph positioning) lookup tables:
Attempting to fix OTLOffsetOverfl owError ('GPOS', 'LookupIndex:', 7, 'SubTableIndex:', None, 'ItemName:', None, 'ItemIndex:', None) owError ('GPOS', 'LookupIndex:', 8, 'SubTableIndex:', None, 'ItemName:', None, 'ItemIndex:', None)
Attempting to fix OTLOffsetOverfl
Recompiling the font reorganizes this table so that it no longer causes an overflow; that was enough to fix the issue for me.