Many lines in the lines 1598~8720 of the FontForge glyph database have widths of 1000 rather than the intended 454.
Since my system's language is Polish, this leads to weird spaces after the Polish-exclusive letters (except ó, which exists in Latin-1 Supplement).
The correct text displayed using a normal font should be Zażółć gęślą jaźń. 1234567890.

Related to #55, but that issue was too specific.